{ "dataset_version": "0.9", "dataset_date": "2026-08-12", "licence": { "metadata": "CC0 1.0 Universal (Public Domain Dedication)", "spdx": "CC0-1.0", "url": "https://creativecommons.org/publicdomain/zero/1.0/", "note": "Descriptive metadata and the census are dedicated to the public domain. Reuse them for anything, including commercially, without asking and without attribution — though a citation helps other people find the source. Written prose on the site is CC BY 4.0. Comparator photographs belong to the institutions that made them and carry the terms stated on each comparator record." }, "type": "census", "count": 27, "total_in_census": 27, "filters_applied": {}, "available_filters": { "state": { "description": "Normalised New Hollstein state, populated only where the holding record states one. Rows whose institution states no state are excluded by this filter rather than guessed at.", "values": [ "I", "II", "IV" ] }, "holder": { "description": "Type of custodian.", "values": [ "art_market", "museum", "private", "university" ] }, "country": { "description": "Country of the current custodian.", "values": [ "Australia", "Denmark", "Germany", "Netherlands", "United Arab Emirates", "United Kingdom", "United States" ] } }, "csv": "https://rembrandt.aidispatch.xyz/api/v1/census.csv", "records": [ { "id": "CN-rijksmuseum-rp-p-1961-989", "holder_type": "museum", "institution": "Rijksmuseum", "department": null, "city": "Amsterdam", "country": "Netherlands", "accession_number": "RP-P-1961-989", "title_as_catalogued": "Self-portrait in a Velvet Cap with Plume / Zelfportret met gepluimde fluwelen baret", "date_as_catalogued": "1638", "medium_as_catalogued": "etching and drypoint", "state": "I", "state_catalogue": "New Hollstein", "state_verbatim": "state 1 of 4 per the stated reference 'New Hollstein Dutch and Flemish (Rembrandt text) 170-1(4)'", "state_confidence": "strongly_supported", "catalogue_refs_verbatim": "Hollstein Dutch 20-1(1); New Hollstein Dutch and Flemish (Rembrandt text) 170-1(4); Bartsch 20-1(1)", "api_source_url": null, "plate_mm": "134 x 103", "sheet_mm": null, "watermark": null, "paper": null, "collector_marks": [ "Lugt 176; Lugt 2228" ], "provenance_note": "Mr and Mrs De Bruijn-van der Leeuw Bequest, Muri, Switzerland; bequest 1961", "credit_line": "Mr and Mrs De Bruijn-van der Leeuw Bequest, Muri, Switzerland", "exhibitions": [], "literature": [], "condition_note": null, "image_url": null, "thumbnail_url": null, "local_image": "/images/comparators/rijksmuseum-rp-p-1961-989-2000.jpg", "local_thumb": "/images/comparators/rijksmuseum-rp-p-1961-989-web.jpg", "iiif_manifest": null, "rights_statement": "Public domain", "source_url": "https://www.rijksmuseum.nl/en/collection/RP-P-1961-989", "source_name": "Rijksmuseum", "evidence_tier": "institutional_record", "confidence": "strongly_supported", "review_state": "verified", "verified_on": "2026-08-12", "verified_by": "Project — record read directly from the holding institution's own published record", "notes": "Rijksmuseum dimension field is 'Height 134 mm x width 103 mm' without an explicit plate/sheet label; recorded here as plate on the basis that it matches the plate size given by other institutions. Persistent URL https://id.rijksmuseum.nl/200124678. Also reachable at https://www.rijksmuseum.nl/en/collection/object/Zelfportret-met-gepluimde-fluwelen-baret--f3296a047f0ce5a7905405062336056b Cross-check: Second Rijksmuseum impression, an EARLIER state than RP-P-OB-285 (170-1(4) vs 170-2(4)) - the two Amsterdam sheets together document states I and II. This page was fetched once (English only), so the Lugt 176 / Lugt 2228 marks have single-source support; recommend re-verification before publication. API route: None; legacy API returns HTTP 410. Retrieved from the public object page." }, { "id": "CN-staatsgalerie-stut-a-10901", "holder_type": "museum", "institution": "Staatsgalerie Stuttgart, Graphische Sammlung", "department": null, "city": "Stuttgart", "country": "Germany", "accession_number": "A 10901", "title_as_catalogued": "Selbstbildnis mit samtenem Federbarett", "date_as_catalogued": "1638", "medium_as_catalogued": "Radierung (etching); material: Buettenpapier (rohweiss)", "state": "I", "state_catalogue": "New Hollstein", "state_verbatim": "I, per the stated literature reference 'Hinterding/Rutgers, The New Hollstein ... Rembrandt, 2013, S. 31, Nr. 170, I'", "state_confidence": "strongly_supported", "catalogue_refs_verbatim": "Erik Hinterding, Jaco Rutgers: The New Hollstein Dutch & Flemish Etchings, Engravings and Woodcuts 1450-1700. Rembrandt, 2013, S. 31, Nr. 170, I", "api_source_url": null, "plate_mm": null, "sheet_mm": null, "watermark": null, "paper": null, "collector_marks": [], "provenance_note": "Staatsgalerie Stuttgart, Graphische Sammlung, alter Bestand", "credit_line": "Staatsgalerie Stuttgart, Graphische Sammlung, alter Bestand", "exhibitions": [], "literature": [], "condition_note": null, "image_url": null, "thumbnail_url": null, "local_image": null, "local_thumb": null, "iiif_manifest": null, "rights_statement": "gemeinfrei; CC Public Domain Mark 1.0 - Weltweit frei von bekannten urheberrechtlichen Einschraenkungen", "source_url": "https://www.staatsgalerie.de/de/sammlung-digital/selbstbildnis-samtenem-federbarett", "source_name": "Staatsgalerie Stuttgart, Graphische Sammlung", "evidence_tier": "institutional_record", "confidence": "strongly_supported", "review_state": "verified", "verified_on": "2026-08-12", "verified_by": "Project — record read directly from the holding institution's own published record", "notes": "DIMENSION ANOMALY - do not propagate: the record's Masse field reads 'Hoehe 19,60 cm (Blatt) / Breite 10,30 cm (Blatt)'. A sheet 196 mm tall and only 103 mm wide is implausible for a 134 x 103 mm plate and is very likely a data-entry error (103 mm is the plate width, not a sheet width). Both dimension fields therefore left null. This is one of only two records located that claims New Hollstein state I." }, { "id": "CN-victoria-and-alber-cai-715", "holder_type": "museum", "institution": "Victoria and Albert Museum", "department": null, "city": "London", "country": "United Kingdom", "accession_number": "CAI.715", "title_as_catalogued": "Self portrait in a velvet cap with plume", "date_as_catalogued": "1638", "medium_as_catalogued": "Etching", "state": "I", "state_catalogue": null, "state_verbatim": "First state", "state_confidence": "strongly_supported", "catalogue_refs_verbatim": "Bibliography cites Bartsch (Vienna 1797); White & Boon 1969; Hollstein; Hind 1923 (no specific numbers printed in the online record)", "api_source_url": "https://api.vam.ac.uk/v2/museumobject/O1023205", "plate_mm": null, "sheet_mm": "142 x 110 (recorded as 'trimmed to')", "watermark": null, "paper": null, "collector_marks": [], "provenance_note": "Bequeathed by Constantine Alexander Ionides", "credit_line": "Bequeathed by Constantine Alexander Ionides", "exhibitions": [], "literature": [], "condition_note": null, "image_url": "https://framemark.vam.ac.uk/collections/2018LH4725/full/735,/0/default.jpg", "thumbnail_url": null, "local_image": null, "local_thumb": null, "iiif_manifest": null, "rights_statement": null, "source_url": "https://collections.vam.ac.uk/item/O1023205/self-portrait-in-a-velvet-print-rembrandt-van-rijn/", "source_name": "Victoria and Albert Museum", "evidence_tier": "institutional_record", "confidence": "strongly_supported", "review_state": "verified", "verified_on": "2026-08-12", "verified_by": "Project — record read directly from the holding institution's own published record", "notes": "Physical description verbatim: 'Etching depicting a man wearing a mezetin velvet cap with feather, and over-gown embroidered at the collar and cuffs and fur-lined at the collar.' Marks: 'Rembrandt. f / 1638 (top left)'. The V&A's stated 'First state' conflicts with the ~140 mm sheet being larger than the plate; the record gives height 14.2 cm and width 11 cm 'trimmed to', so this is the sheet. Cross-check: V&A system number O1023205. Retrieved from the V&A open API (no key required) - an API not named in the brief, added opportunistically. No catalogue reference field is returned. A web-search snippet described this impression as a 'first state'; the API record contains no state field, so state is left null. Dimension qualifier is 'trimmed to', so 142 x 110 mm is the trimmed sheet." }, { "id": "CN-harvard-art-museum-g4910", "holder_type": "university", "institution": "Harvard Art Museums / Fogg Museum", "department": null, "city": "Cambridge, MA", "country": "United States", "accession_number": "G4910", "title_as_catalogued": "Self-Portrait in a Velvet Cap with Plume (Former Title: Rembrandt with a Long Feather in His Cap)", "date_as_catalogued": "1638", "medium_as_catalogued": "Etching on white antique laid paper", "state": "II", "state_catalogue": "New Hollstein", "state_verbatim": "ii/iv", "state_confidence": "strongly_supported", "catalogue_refs_verbatim": "New Hollstein 170, Bartsch 20, Hind 156, R. 20", "api_source_url": null, "plate_mm": "136 x 106", "sheet_mm": "162 x 127", "watermark": null, "paper": null, "collector_marks": [ "verso, brown ink: J.A. Boerner / [illeg.] 1870 (Lugt 269); verso, blue stamp: FK [monogram within a circle; Friedrich Kalle (Lugt 1021)]; verso, purple stamp with graphite numbering within: [Gray Collection accession stamp (Lugt 4836)] 4910" ], "provenance_note": "Recorded Ownership History: J.A. Boerner (Lugt 269), F. Kalle (Lugt 1021).", "credit_line": "Harvard Art Museums/Fogg Museum, Gray Collection of Engravings Fund", "exhibitions": [], "literature": [], "condition_note": null, "image_url": null, "thumbnail_url": null, "local_image": null, "local_thumb": null, "iiif_manifest": "https://iiif.harvardartmuseums.org/manifests/object/278958", "rights_statement": "The Harvard Art Museums encourage the use of images found on this website for personal, noncommercial use, including educational and scholarly purposes.", "source_url": "https://harvardartmuseums.org/collections/object/278958", "source_name": "Harvard Art Museums / Fogg Museum", "evidence_tier": "institutional_record", "confidence": "strongly_supported", "review_state": "verified", "verified_on": "2026-08-12", "verified_by": "Project — record read directly from the holding institution's own published record", "notes": "Carries a historic French verso inscription in graphite that is itself state evidence: 'B. 20 / 1st. etat, le trait du menton fort et av[an]t le retouche / sur la joue droite' - i.e. an early cataloguer read the strong chin line and the absence of retouching on the right cheek as first-state markers, whereas Harvard now catalogues the sheet as ii/iv. Persistent link https://hvrd.art/o/278958. Cross-check: Densest reference and collector-mark record of the census, and the only one with an unambiguous dedicated 'State' field (ii/iv). The verso graphite note in French ('1st. etat, le trait du menton fort et avant le retouche sur la joie droite') is an EARLIER collector's opinion that this is a first state, which Harvard's own cataloguing now supersedes with ii/iv - a useful worked example of annotation vs. current attribution. 'R. 20' is left unexpanded by Harvard; do not silently expand it. Harvard flags: 'This record has been reviewed by the curatorial staff but may be incomplete.' API route: None usable. https://api.harvardartmuseums.org/object returns HTTP 401 without a key. The object was discovered by rendering the JS search UI at https://harvardartmuseums.org/collections?q=velvet+cap+with+plume in a browser to obtain object id 278958, then retrieving the server-rendered object page over plain HTTP." }, { "id": "CN-national-gallery-o-1943-3-7201", "holder_type": "museum", "institution": "National Gallery of Art", "department": null, "city": "Washington, DC", "country": "United States", "accession_number": "1943.3.7201", "title_as_catalogued": "Self-Portrait in a Velvet Cap with Plume", "date_as_catalogued": "1638", "medium_as_catalogued": "etching on laid paper", "state": "II", "state_catalogue": "New Hollstein", "state_verbatim": "Catalogue Raisonne field: 'White/Boon 1969, no. 20, State only'. Bibliography field: 'The New Hollstein ... no. 170, state ii/iii.'", "state_confidence": "strongly_supported", "catalogue_refs_verbatim": "White/Boon 1969, no. 20, State only; Hind 1923; The New Hollstein ... no. 170, state ii/iii", "api_source_url": null, "plate_mm": "135 x 103", "sheet_mm": "180 x 142", "watermark": "Foolscap", "paper": null, "collector_marks": [ "Lessing Julius Rosenwald (Lugt 1760b)" ], "provenance_note": "Lessing Julius Rosenwald (Lugt 1760b) purchased from Hollstein and Puppel Sale (lot #730); given to the National Gallery of Art 1943", "credit_line": "Rosenwald Collection", "exhibitions": [], "literature": [], "condition_note": null, "image_url": "https://media.nga.gov/iiif/c62f7cd7-4162-4cc8-9298-d7bbe6984c08/full/full/0/default.jpg", "thumbnail_url": null, "local_image": "/images/comparators/nga-1943-3-7201-2000.jpg", "local_thumb": "/images/comparators/nga-1943-3-7201-web.jpg", "iiif_manifest": "https://www.nga.gov/api/v1/iiif/presentation/manifest.json?cultObj:id=9997 (URL asserted by Wikidata property P6108; returns HTTP 403 to non-browser clients, so not independently confirmed)", "rights_statement": "This image is in the public domain. You can copy, modify and distribute this image, even for commercial purposes. (CC0)", "source_url": "https://www.nga.gov/artworks/9997-self-portrait-velvet-cap-plume", "source_name": "National Gallery of Art", "evidence_tier": "institutional_record", "confidence": "strongly_supported", "review_state": "verified", "verified_on": "2026-08-12", "verified_by": "Project — record read directly from the holding institution's own published record", "notes": "Inscription: 'upper left in plate: Rembrandt f / 1638'. Legacy record at https://www.nga.gov/collection/art-object-page.9997.html carries identical data. NGA's 'state ii/iii' is the only institutional record found that implies a three-state New Hollstein division; four other institutions say ii/iv. Retrieved via a real browser session; direct HTTP fetch is Cloudflare-blocked. Cross-check: THE SINGLE MOST VALUABLE RECORD IN THIS CENSUS. It is the only one carrying (a) an explicit, named White/Boon number - answering the brief's open question - and (b) a watermark ('Foolscap'). In-plate inscription recorded as 'upper left in plate: Rembrandt f / 1638'. Exhibition history recorded for 1930 (two Rosenwald loan shows) and 1932. NGA object id 9997; the accession number matches Wikidata Q65024742 (P217), which was found independently via SPARQL. API route: None. api.nga.gov returns 404 without a key. Retrieved by rendering the public object page in a browser; curl and WebFetch both receive a Cloudflare HTTP 403 interstitial." }, { "id": "CN-national-gallery-o-19-4", "holder_type": "museum", "institution": "National Gallery of Victoria", "department": null, "city": "Melbourne", "country": "Australia", "accession_number": "19-4", "title_as_catalogued": "Self-portrait in a velvet cap with plume", "date_as_catalogued": "1638", "medium_as_catalogued": "Etching", "state": "II", "state_catalogue": "New Hollstein", "state_verbatim": "2nd of 4 states (NHD 170 ii/iv)", "state_confidence": "strongly_supported", "catalogue_refs_verbatim": "Bartsch 20; Hind 156; White & Boon 20; NHD 170 ii/iv", "api_source_url": null, "plate_mm": "135 x 105", "sheet_mm": "139 x 108", "watermark": "Arms of Ravensburg (variant C.a.) - fragments with battlements appearing as two towers with gate between, on a console", "paper": null, "collector_marks": [], "provenance_note": "Felton Bequest, 1933", "credit_line": "National Gallery of Victoria, Melbourne; Felton Bequest, 1933", "exhibitions": [], "literature": [], "condition_note": null, "image_url": "https://content.ngv.vic.gov.au/retrieve.php?size=1280&type=image&vernonID=38353", "thumbnail_url": null, "local_image": null, "local_thumb": null, "iiif_manifest": null, "rights_statement": "'While the NGV believes this work to be in the Public Domain' - users must verify permissions and provide full attribution", "source_url": "https://www.ngv.vic.gov.au/explore/collection/work/38353/", "source_name": "National Gallery of Victoria", "evidence_tier": "institutional_record", "confidence": "strongly_supported", "review_state": "verified", "verified_on": "2026-08-12", "verified_by": "Project — record read directly from the holding institution's own published record", "notes": "Inscription: 'Rembrandt. f / 1638' printed in ink, upper left. The NGV watermark-research page (https://www.ngv.vic.gov.au/explore/collection/conservation/watermarks-rembrandt/) independently lists this work under 'Arms of Ravensburg'. This is the single clearest institutional statement of the state count: '2nd of 4 states'." }, { "id": "CN-rijksmuseum-rp-p-ob-285", "holder_type": "museum", "institution": "Rijksmuseum", "department": null, "city": "Amsterdam", "country": "Netherlands", "accession_number": "RP-P-OB-285", "title_as_catalogued": "Self-portrait in a velvet cap with plume", "date_as_catalogued": "1638", "medium_as_catalogued": "etching and drypoint", "state": "II", "state_catalogue": "New Hollstein", "state_verbatim": "state 2 of 4 per the stated reference 'New Hollstein Dutch and Flemish (Rembrandt text) 170-2(4)'", "state_confidence": "strongly_supported", "catalogue_refs_verbatim": "Bartsch 20-1(1); Hollstein Dutch 20-1(1); New Hollstein Dutch and Flemish (Rembrandt text) 170-2(4)", "api_source_url": null, "plate_mm": "134 x 103", "sheet_mm": null, "watermark": null, "paper": null, "collector_marks": [ "Lugt 240" ], "provenance_note": null, "credit_line": null, "exhibitions": [], "literature": [], "condition_note": null, "image_url": null, "thumbnail_url": null, "local_image": "/images/comparators/rijksmuseum-rp-p-ob-285-2000.jpg", "local_thumb": "/images/comparators/rijksmuseum-rp-p-ob-285-web.jpg", "iiif_manifest": null, "rights_statement": "Public domain", "source_url": "https://www.rijksmuseum.nl/en/collection/RP-P-OB-285", "source_name": "Rijksmuseum", "evidence_tier": "institutional_record", "confidence": "strongly_supported", "review_state": "verified", "verified_on": "2026-08-12", "verified_by": "Project — record read directly from the holding institution's own published record", "notes": "Dimension field '134 mm x 103 mm' unlabelled; recorded as plate. Lugt 240 is the Rijksprentenkabinet mark. Cross-check: This is the impression the brief flagged for verification. It IS B.20 / NH 170. Cross-checked on the English and Dutch pages, which returned character-identical catalogue reference strings. Raw HTML is JS-rendered, so no image or IIIF URL could be captured and none is asserted. API route: None. The legacy REST API (https://www.rijksmuseum.nl/api/en/collection/RP-P-OB-285) returns HTTP 410 Gone. Retrieved from the public object page in both English and Dutch." }, { "id": "CN-statens-museum-for-kksgb5223", "holder_type": "museum", "institution": "Statens Museum for Kunst (SMK)", "department": null, "city": "Copenhagen", "country": "Denmark", "accession_number": "KKSgb5223", "title_as_catalogued": "Selvportraet (Self-portrait)", "date_as_catalogued": "1638", "medium_as_catalogued": "Radering (etching)", "state": "II", "state_catalogue": "New Hollstein", "state_verbatim": "II, per the stated references 'Hollstein 20 II; Hinterding 170 II; Rovinski 20 II'", "state_confidence": "strongly_supported", "catalogue_refs_verbatim": "Hollstein 20 II; Hinterding 170 II; Rovinski 20 II", "api_source_url": null, "plate_mm": "134 x 103", "sheet_mm": null, "watermark": null, "paper": null, "collector_marks": [], "provenance_note": "Acquisition 1787; Gammel bestand (Old Collection), Den Kongelige Kobberstiksamling", "credit_line": null, "exhibitions": [], "literature": [], "condition_note": null, "image_url": "https://iip-thumb.smk.dk/iiif/jp2/w9505304m_kksgb5223.TIF.reconstructed.tif.jp2/full/!1024,/0/default.jpg", "thumbnail_url": null, "local_image": null, "local_thumb": null, "iiif_manifest": "https://api.smk.dk/api/v1/iiif/manifest?id=KKSgb5223", "rights_statement": "Public domain; Creative Commons Public Domain Mark 1.0", "source_url": "https://open.smk.dk/artwork/image/KKSgb5223", "source_name": "Statens Museum for Kunst (SMK)", "evidence_tier": "institutional_record", "confidence": "strongly_supported", "review_state": "verified", "verified_on": "2026-08-12", "verified_by": "Project — record read directly from the holding institution's own published record", "notes": "Full record read via SMK's open record endpoint https://api.smk.dk/api/v1/art/?object_number=KKSgb5223. Inscriptions recorded: signed and dated 'Rembrandt f / 1638'; a later notation 'Bl 233 / B 20' upper right. Dimension explicitly typed as plate size." }, { "id": "CN-the-british-museum-1910-0212-376", "holder_type": "museum", "institution": "The British Museum", "department": null, "city": "London", "country": "United Kingdom", "accession_number": "1910,0212.376", "title_as_catalogued": "print (untitled record; described as 'Self-portrait of Rembrandt, in a velvet cap with plume, half-length facing front, with left hand inside tunic; second state with jaw delineated. 1638')", "date_as_catalogued": "1638", "medium_as_catalogued": "etching", "state": "II", "state_catalogue": "New Hollstein", "state_verbatim": "second state with jaw delineated (New Hollstein 170.II)", "state_confidence": "strongly_supported", "catalogue_refs_verbatim": "New Hollstein (Dutch & Flemish) 170.II; Hind 1923 no. 156; White & Boon 1969 no. 20", "api_source_url": null, "plate_mm": null, "sheet_mm": null, "watermark": "Basilisk (Hinterding catalogue, variant A'.a., datable c.1641-47 [detail of wing only])", "paper": null, "collector_marks": [], "provenance_note": "Bequeathed by: George Salting; Acquisition date 1910", "credit_line": "Bequeathed by George Salting", "exhibitions": [], "literature": [], "condition_note": null, "image_url": null, "thumbnail_url": null, "local_image": null, "local_thumb": null, "iiif_manifest": null, "rights_statement": null, "source_url": "https://www.britishmuseum.org/collection/object/P_1910-0212-376", "source_name": "The British Museum", "evidence_tier": "institutional_record", "confidence": "strongly_supported", "review_state": "verified", "verified_on": "2026-08-12", "verified_by": "Project — record read directly from the holding institution's own published record", "notes": "Dimensions given by the BM without a plate/sheet label: 'Height: 136 millimetres / Width: 105 millimetres'. Curator's comments state verbatim: 'For other impressions see F,4.25-26. For a later state see 1941,0327.11.3. For copies see also 1861,0518.200; 1902,0514.736 and 1938,0917.1.' Exhibited London, National Gallery, 'Rembrandt by Himself', 1999 (cat. no. 49). Page retrieved via a real browser session; direct HTTP fetch is blocked by a Cloudflare interstitial." }, { "id": "CN-the-british-museum-f-4-25", "holder_type": "museum", "institution": "The British Museum", "department": null, "city": "London", "country": "United Kingdom", "accession_number": "F,4.25", "title_as_catalogued": "print (described as 'Self-portrait of Rembrandt, in a velvet cap with plume, half-length facing front, with left hand inside tunic; second state with jaw delineated. 1638')", "date_as_catalogued": "1638", "medium_as_catalogued": "etching", "state": "II", "state_catalogue": "New Hollstein", "state_verbatim": "second state with jaw delineated (New Hollstein 170.II)", "state_confidence": "strongly_supported", "catalogue_refs_verbatim": "New Hollstein (Dutch & Flemish) 170.II; Hind 1923 no. 156; White & Boon 1969 no. 20", "api_source_url": null, "plate_mm": null, "sheet_mm": null, "watermark": "Probably Strasbourg lily (Hinterding catalogue, variant ZZ.zz [detail of top only])", "paper": null, "collector_marks": [], "provenance_note": "Bequeathed by: Clayton Mordaunt Cracherode; Acquisition date 1799", "credit_line": "Bequeathed by Clayton Mordaunt Cracherode", "exhibitions": [], "literature": [], "condition_note": null, "image_url": null, "thumbnail_url": null, "local_image": null, "local_thumb": null, "iiif_manifest": null, "rights_statement": null, "source_url": "https://www.britishmuseum.org/collection/object/P_F-4-25", "source_name": "The British Museum", "evidence_tier": "institutional_record", "confidence": "strongly_supported", "review_state": "verified", "verified_on": "2026-08-12", "verified_by": "Project — record read directly from the holding institution's own published record", "notes": "Dimensions given without a plate/sheet label: 'Height: 134 millimetres / Width: 105 millimetres'. Additional ID: Miscellaneous number 1973,U.893. Curator's comment: 'For another impression and comment see 1910,0212.376.'" }, { "id": "CN-the-morgan-library-rvr-24", "holder_type": "museum", "institution": "The Morgan Library & Museum", "department": null, "city": "New York", "country": "United States", "accession_number": "RvR 24", "title_as_catalogued": "Self Portrait in a Velvet Cap with Plume", "date_as_catalogued": "1638", "medium_as_catalogued": "Etching on paper", "state": "II", "state_catalogue": "New Hollstein", "state_verbatim": "NHD 170, II (the record's Notes field also says 'Only one state.')", "state_confidence": "strongly_supported", "catalogue_refs_verbatim": "NHD 170, II", "api_source_url": null, "plate_mm": "134 x 103", "sheet_mm": null, "watermark": "Countermark: Letters 'RP' with trefoil", "paper": null, "collector_marks": [], "provenance_note": "George W. Vanderbilt (1862-1914); from whom purchased by J. Pierpont Morgan in 1905.", "credit_line": null, "exhibitions": [], "literature": [], "condition_note": null, "image_url": null, "thumbnail_url": null, "local_image": null, "local_thumb": null, "iiif_manifest": null, "rights_statement": null, "source_url": "https://www.themorgan.org/rembrandt/print/161982", "source_name": "The Morgan Library & Museum", "evidence_tier": "institutional_record", "confidence": "strongly_supported", "review_state": "verified", "verified_on": "2026-08-12", "verified_by": "Project — record read directly from the holding institution's own published record", "notes": "Internal contradiction in the Morgan record: the 'NHD number' field reads 'NHD 170, II' while the 'Notes' field reads 'Only one state.' Recorded verbatim, not reconciled. Inscription: 'Signed and dated upper left, \"Rembrandt f 1638\".' Dimension '134 x 103 mm' unlabelled. Cross-check: One of only two impressions in this census with a recorded watermark, and the only one with a countermark description ('RP' with trefoil) - watermark evidence is the primary tool for dating Rembrandt impressions, so this is high-value. The record's internal tension between 'NHD 170, II' and 'Only one state.' mirrors the Bartsch/White-Boon vs New Hollstein divergence seen across the census. Part of the Morgan's 'Rembrandt Prints Online' project. API route: None. themorgan.org serves a Cloudflare bot-verification interstitial to curl and WebFetch; retrieved by rendering the page in a browser after the challenge cleared." }, { "id": "CN-rijksmuseum-rp-p-ob-286", "holder_type": "museum", "institution": "Rijksmuseum", "department": null, "city": "Amsterdam", "country": "Netherlands", "accession_number": "RP-P-OB-286", "title_as_catalogued": "Self-portrait in a velvet cap with plume / Zelfportret met gepluimde fluwelen baret", "date_as_catalogued": "1638, with later printing 1850-1906", "medium_as_catalogued": "etching", "state": "IV", "state_catalogue": "New Hollstein", "state_verbatim": "state 4 of 4 per the stated reference 'New Hollstein Dutch and Flemish (Rembrandt text) 170-4(4)'", "state_confidence": "strongly_supported", "catalogue_refs_verbatim": "Bartsch 20; Hollstein Dutch 20; New Hollstein Dutch and Flemish (Rembrandt text) 170-4(4)", "api_source_url": null, "plate_mm": "134 x 104", "sheet_mm": null, "watermark": null, "paper": null, "collector_marks": [], "provenance_note": null, "credit_line": null, "exhibitions": [], "literature": [], "condition_note": null, "image_url": null, "thumbnail_url": null, "local_image": "/images/comparators/rijksmuseum-rp-p-ob-286-2000.jpg", "local_thumb": "/images/comparators/rijksmuseum-rp-p-ob-286-web.jpg", "iiif_manifest": null, "rights_statement": "Public domain / Publiek domein", "source_url": "https://www.rijksmuseum.nl/en/collection/RP-P-OB-286", "source_name": "Rijksmuseum", "evidence_tier": "institutional_record", "confidence": "strongly_supported", "review_state": "verified", "verified_on": "2026-08-12", "verified_by": "Project — record read directly from the holding institution's own published record", "notes": "A late/posthumous impression: the record credits later printing to the workshop of Henry Louis Basan, possibly published by Michel Bernard and Alvin-Beaumont (1850-1906). Verso inscription in pencil, centre bottom: 'Coppier'. Dimension field unlabelled." }, { "id": "CN-the-british-museum-1941-0327-11-3", "holder_type": "museum", "institution": "The British Museum", "department": null, "city": "London", "country": "United Kingdom", "accession_number": "1941,0327.11.3", "title_as_catalogued": "Series: Recueil Basan (described as 'Self-portrait of Rembrandt, in a velvet cap with plume, half-length facing front, with left hand inside tunic; fourth state with signature redrawn; from an edition of the Recueil published by Henri Louis Basan around 1810. 1638')", "date_as_catalogued": "1638", "medium_as_catalogued": "etching", "state": "IV", "state_catalogue": "New Hollstein", "state_verbatim": "fourth state with signature redrawn (New Hollstein 170.IV)", "state_confidence": "strongly_supported", "catalogue_refs_verbatim": "New Hollstein (Dutch & Flemish) 170.IV; Hind 1923 no. 156; White & Boon 1969 no. 20", "api_source_url": null, "plate_mm": null, "sheet_mm": null, "watermark": null, "paper": null, "collector_marks": [], "provenance_note": "Purchased from: Maggs Bros; Acquisition date 1941", "credit_line": "Purchased from Maggs Bros", "exhibitions": [], "literature": [], "condition_note": null, "image_url": null, "thumbnail_url": null, "local_image": null, "local_thumb": null, "iiif_manifest": null, "rights_statement": null, "source_url": "https://www.britishmuseum.org/collection/object/P_1941-0327-11-3", "source_name": "The British Museum", "evidence_tier": "institutional_record", "confidence": "strongly_supported", "review_state": "verified", "verified_on": "2026-08-12", "verified_by": "Project — record read directly from the holding institution's own published record", "notes": "Dimensions given without a plate/sheet label: 'Height: 132 millimetres / Width: 103 millimetres'. Producer names include 'Print made by: Francois Basan (re-work)' and 'Published by: Henri Louis Basan'; published in Paris. A posthumous Basan-edition impression of the same plate, not a lifetime impression." }, { "id": "CN-art-institute-of-c-1938-1792", "holder_type": "museum", "institution": "Art Institute of Chicago", "department": null, "city": "Chicago", "country": "United States", "accession_number": "1938.1792", "title_as_catalogued": "Self-Portrait in a Velvet Cap with Plume", "date_as_catalogued": "1638", "medium_as_catalogued": "Etching on buff laid paper", "state": null, "state_catalogue": null, "state_verbatim": null, "state_confidence": "unknown", "catalogue_refs_verbatim": "", "api_source_url": "https://api.artic.edu/api/v1/artworks/29216", "plate_mm": null, "sheet_mm": "123 x 105 mm ('Sheet, cut within platemark: 12.3 x 10.5 cm (4 7/8 x 4 3/16 in.)')", "watermark": null, "paper": null, "collector_marks": [], "provenance_note": null, "credit_line": "Clarence Buckingham Collection", "exhibitions": [], "literature": [], "condition_note": null, "image_url": "https://www.artic.edu/iiif/2/37c75de5-dcb4-4edb-d368-2100c571a8c1/full/843,/0/default.jpg", "thumbnail_url": null, "local_image": "/images/comparators/aic-1938-1792-2000.jpg", "local_thumb": "/images/comparators/aic-1938-1792-web.jpg", "iiif_manifest": "https://api.artic.edu/api/v1/artworks/29216/manifest.json", "rights_statement": "is_public_domain: true; API data licensed CC0 1.0", "source_url": "https://www.artic.edu/artworks/29216/self-portrait-in-a-velvet-cap-with-plume", "source_name": "Art Institute of Chicago", "evidence_tier": "institutional_record", "confidence": "strongly_supported", "review_state": "verified", "verified_on": "2026-08-12", "verified_by": "Project — record read directly from the holding institution's own published record", "notes": "AIC's record carries NO catalogue reference data at all - publication_history, provenance_text, inscriptions and alt_titles are all null. Identification rests on the exact title plus date 1638 plus medium. IIIF manifest confirmed HTTP 200. The sheet is cut within the platemark, hence markedly smaller than the ~135 x 103 mm plate." }, { "id": "CN-cleveland-museum-o-1942-874", "holder_type": "museum", "institution": "Cleveland Museum of Art", "department": null, "city": "Cleveland", "country": "United States", "accession_number": "1942.874", "title_as_catalogued": "Self-Portrait in Velvet Cap with Plume", "date_as_catalogued": "1638", "medium_as_catalogued": "etching with engraving; on cream(3) laid paper", "state": null, "state_catalogue": null, "state_verbatim": null, "state_confidence": "unknown", "catalogue_refs_verbatim": "Hollstein 20 (XVIII.9)", "api_source_url": "https://openaccess-api.clevelandart.org/api/artworks/1942.874", "plate_mm": null, "sheet_mm": "112 x 104 mm ('Sheet: 11.2 x 10.4 cm (4 7/16 x 4 1/8 in.)')", "watermark": "None recorded (the support_materials watermarks array is present and empty)", "paper": null, "collector_marks": [], "provenance_note": "\"Dr. Daniel A. Huebsch, Cleveland, Ohio (not stamped). Robert Hays Gries, Cleveland, Ohio; gift, 1942\"", "credit_line": "Gift of Robert Hays Gries", "exhibitions": [], "literature": [], "condition_note": null, "image_url": "https://openaccess-cdn.clevelandart.org/1942.874/1942.874_print.jpg", "thumbnail_url": null, "local_image": "/images/comparators/cleveland-1942-874-2000.jpg", "local_thumb": "/images/comparators/cleveland-1942-874-web.jpg", "iiif_manifest": null, "rights_statement": "CC0 (share_license_status: CC0)", "source_url": "https://clevelandart.org/art/1942.874", "source_name": "Cleveland Museum of Art", "evidence_tier": "institutional_record", "confidence": "strongly_supported", "review_state": "verified", "verified_on": "2026-08-12", "verified_by": "Project — record read directly from the holding institution's own published record", "notes": "Verso inscription transcribed verbatim by the museum: 'VERSO, upper left, in graphite: G. 6123 ; left center, in graphite: v[?] ; center, in graphite: B.20 ; center, in graphite: 18 ; lower left, in graphite: W. 20 ; lower center, in graphite: ober verk[illegible]ten ; lower right, in graphite: Re/2TT'. The 'B.20' and 'W. 20' annotations corroborate Bartsch 20 and (given the NGA's White/Boon no. 20) White & Boon 20. state_of_the_work is explicitly null - do not assign a state. Links to wikidata Q80019004. Medium ('etching with engraving') conflicts with the Rijksmuseum's 'etching and drypoint'. No IIIF manifest discoverable; three candidate URL patterns tested, all failed." }, { "id": "CN-fine-arts-museums--1963-30-187", "holder_type": "museum", "institution": "Fine Arts Museums of San Francisco (Achenbach Foundation for Graphic Arts)", "department": null, "city": "San Francisco", "country": "United States", "accession_number": "1963.30.187", "title_as_catalogued": "Self-Portrait with a Velvet Cap with Plume", "date_as_catalogued": "1638", "medium_as_catalogued": "Etching", "state": null, "state_catalogue": null, "state_verbatim": null, "state_confidence": "unknown", "catalogue_refs_verbatim": null, "api_source_url": null, "plate_mm": null, "sheet_mm": null, "watermark": null, "paper": null, "collector_marks": [], "provenance_note": null, "credit_line": "Achenbach Foundation for Graphic Arts", "exhibitions": [], "literature": [], "condition_note": null, "image_url": null, "thumbnail_url": null, "local_image": null, "local_thumb": null, "iiif_manifest": null, "rights_statement": null, "source_url": "https://www.famsf.org/artworks/self-portrait-with-a-velvet-cap-with-plume", "source_name": "Fine Arts Museums of San Francisco (Achenbach Foundation for Graphic Arts)", "evidence_tier": "institutional_record", "confidence": "strongly_supported", "review_state": "verified", "verified_on": "2026-08-12", "verified_by": "Project — record read directly from the holding institution's own published record", "notes": "The record's Edition field reads '(Modern Impression)' - FAMSF itself flags this as a later/modern printing, not a 17th-century impression. Dimensions given as 'Image: 135 x 105 mm', which is a plate-sized image measurement but is labelled 'Image', so both plate and sheet fields are left null." }, { "id": "CN-herzog-anton-ulric-rembrandt-ab-3-16", "holder_type": "museum", "institution": "Herzog Anton Ulrich-Museum", "department": null, "city": "Braunschweig", "country": "Germany", "accession_number": "Rembrandt AB 3.16", "title_as_catalogued": "[Selbstbildnis mit Federbarett; Self-Portrait in a Velvet Cap with Plume; Portrait de Rembrandt au bonnet orne d'une plume]", "date_as_catalogued": "1638", "medium_as_catalogued": "Radierung (etching)", "state": null, "state_catalogue": null, "state_verbatim": null, "state_confidence": "unknown", "catalogue_refs_verbatim": "Bartsch 1797 (Rembrandt), S. 20; White/Boon 1969 (Hollstein Dutch and Flemish XVIII/XIX), S. 20; The New Hollstein Dutch & Flemish II.31.170 II / II.85.170/II; TIB L.12.20; Wurzbach II.423.20", "api_source_url": null, "plate_mm": "135 x 104", "sheet_mm": "140 x 110", "watermark": null, "paper": null, "collector_marks": [], "provenance_note": null, "credit_line": null, "exhibitions": [], "literature": [], "condition_note": null, "image_url": "https://assets.museum-digital.org/nds/resources/images/202009/500w_000001-5f5852a8929bf.jpg", "thumbnail_url": null, "local_image": null, "local_thumb": null, "iiif_manifest": null, "rights_statement": "Freier Zugang - Keine Weiterverwendung (RR-F)", "source_url": "https://nat.museum-digital.de/object/850002", "source_name": "Herzog Anton Ulrich-Museum", "evidence_tier": "institutional_record", "confidence": "strongly_supported", "review_state": "verified", "verified_on": "2026-08-12", "verified_by": "Project — record read directly from the holding institution's own published record", "notes": "The New Hollstein citation embedded in the reference string ('170 II') implies second state, but the record has no explicit state field, so state left null. Published via museum-digital:deutschland." }, { "id": "CN-herzog-anton-ulric-rembrandt-ab-3-17-fo", "holder_type": "museum", "institution": "Herzog Anton Ulrich-Museum", "department": null, "city": "Braunschweig", "country": "Germany", "accession_number": "Rembrandt AB 3.17 (former number 5376)", "title_as_catalogued": "[Selbstbildnis mit Federbarett; Self-Portrait in a Velvet Cap with Plume; Portrait de Rembrandt au bonnet orne d'une plume]", "date_as_catalogued": "1638", "medium_as_catalogued": "Radierung (etching)", "state": null, "state_catalogue": null, "state_verbatim": null, "state_confidence": "unknown", "catalogue_refs_verbatim": "The New Hollstein Dutch & Flemish, S. [25, Rembrandt, text].II.31.170 II; [25, Rembrandt, plates].II.85.170/II; TIB, S. L.12.20; Wurzbach, S. II.423.20; Bartsch 1797 (Rembrandt), S. 20; Vasel 1903, S. 4517; White/Boon 1969 (Hollstein Dutch and Flemish XVIII/XIX), S. 20", "api_source_url": null, "plate_mm": null, "sheet_mm": "134 x 104", "watermark": null, "paper": null, "collector_marks": [], "provenance_note": null, "credit_line": null, "exhibitions": [], "literature": [], "condition_note": null, "image_url": null, "thumbnail_url": null, "local_image": null, "local_thumb": null, "iiif_manifest": null, "rights_statement": null, "source_url": "https://www.deutsche-digitale-bibliothek.de/item/GQLWQ56KS7CY42WIXH637I7BGI6QHRII", "source_name": "Herzog Anton Ulrich-Museum", "evidence_tier": "institutional_record", "confidence": "strongly_supported", "review_state": "verified", "verified_on": "2026-08-12", "verified_by": "Project — record read directly from the holding institution's own published record", "notes": "A SECOND Braunschweig impression, distinct from AB 3.16 (different inventory number, different dimensions). Record surfaced via Deutsche Digitale Bibliothek aggregation of the Herzog Anton Ulrich-Museum's own data; treated as an institutional record because the DDB item exposes the museum's inventory number and its own reference apparatus. A direct museum-digital record for AB 3.17 was not located." }, { "id": "CN-museum-boijmans-va-mb-1962-213-pk", "holder_type": "museum", "institution": "Museum Boijmans Van Beuningen", "department": null, "city": "Rotterdam", "country": "Netherlands", "accession_number": "MB 1962/213 (PK)", "title_as_catalogued": "Zelfportret met gepluimde baret", "date_as_catalogued": "1638", "medium_as_catalogued": "Ets, geretoucheerd met pen en grijze inkt (etching, retouched with pen and grey ink)", "state": null, "state_catalogue": null, "state_verbatim": null, "state_confidence": "unknown", "catalogue_refs_verbatim": null, "api_source_url": null, "plate_mm": null, "sheet_mm": null, "watermark": null, "paper": null, "collector_marks": [], "provenance_note": "Schenking D. van Stolk en S.L. van Stolk, 1962", "credit_line": "Schenking D. van Stolk en S.L. van Stolk, 1962", "exhibitions": [], "literature": [], "condition_note": null, "image_url": null, "thumbnail_url": null, "local_image": null, "local_thumb": null, "iiif_manifest": null, "rights_statement": null, "source_url": "https://www.boijmans.nl/index.php/collectie/kunstwerken/78757/zelfportret-met-gepluimde-baret", "source_name": "Museum Boijmans Van Beuningen", "evidence_tier": "institutional_record", "confidence": "strongly_supported", "review_state": "verified", "verified_on": "2026-08-12", "verified_by": "Project — record read directly from the holding institution's own published record", "notes": "Dimensions given as 'Hoogte 135 mm; Breedte 104 mm' without a plate/sheet label, so both typed fields left null. Materially unusual: the sheet is recorded as retouched by hand with pen and grey ink. Collection: Tekeningen & Prenten; currently in depot. No Bartsch/New Hollstein number is printed on the public record." }, { "id": "CN-museum-of-fine-art-p391", "holder_type": "museum", "institution": "Museum of Fine Arts, Boston", "department": null, "city": "Boston", "country": "United States", "accession_number": "P391", "title_as_catalogued": "Self Portrait in a Velvet Cap with Plume", "date_as_catalogued": "1638", "medium_as_catalogued": "Etching", "state": null, "state_catalogue": null, "state_verbatim": "Hind 156 ii (implied second state; no separate state field)", "state_confidence": "unknown", "catalogue_refs_verbatim": "Bartsch 020; Hind 156 ii", "api_source_url": null, "plate_mm": "135 x 105", "sheet_mm": "141 x 110", "watermark": null, "paper": null, "collector_marks": [ "Lugt 1309 (Henry F. Sewall)" ], "provenance_note": "Henry F. Sewall (1816-1896, New York, Lugt 1309); purchased by MFA, November 1897.", "credit_line": "Harvey D. Parker Collection - Harvey Drury Parker Fund", "exhibitions": [], "literature": [], "condition_note": null, "image_url": null, "thumbnail_url": null, "local_image": null, "local_thumb": null, "iiif_manifest": null, "rights_statement": null, "source_url": "https://www.mfa.org/collections/object/self-portrait-in-a-velvet-cap-with-plume-108044", "source_name": "Museum of Fine Arts, Boston", "evidence_tier": "institutional_record", "confidence": "strongly_supported", "review_state": "verified", "verified_on": "2026-08-12", "verified_by": "Project — record read directly from the holding institution's own published record", "notes": "Dimensions labelled 'Platemark' and 'Sheet' in the record. Retrieved via a real browser session (record served from collections.mfa.org); direct HTTP fetch is Cloudflare-blocked. Cross-check: A search of the full MFA collections database for this title returned exactly one impression of B.20 (P391); the only other 'velvet cap' hit is the Sketch Plate (P732), correctly rejected. Note MFA's uniquely zero-padded 'Bartsch 020' formatting - a census importer must normalise this. API route: None. mfa.org serves a Cloudflare challenge to curl and WebFetch; retrieved by rendering in a browser." }, { "id": "CN-princeton-universi-x1949-229", "holder_type": "university", "institution": "Princeton University Art Museum", "department": null, "city": "Princeton, NJ", "country": "United States", "accession_number": "x1949-229", "title_as_catalogued": "Rembrandt in Velvet Cap", "date_as_catalogued": "1638", "medium_as_catalogued": "Etching", "state": null, "state_catalogue": null, "state_verbatim": null, "state_confidence": "unknown", "catalogue_refs_verbatim": "Bartsch 20; Biorklund and Barnard 38; Hind 156; Hollstein 9; Munz 22; New Hollstein 31.170", "api_source_url": "https://data.artmuseum.princeton.edu/iiif/objects/7280 (IIIF Presentation 3, HTTP 200, verified)", "plate_mm": "138 x 105", "sheet_mm": "138 x 105 (sheet trimmed to plate)", "watermark": null, "paper": null, "collector_marks": [], "provenance_note": "Bequest of Jessie P. Frothingham", "credit_line": "Bequest of Jessie P. Frothingham", "exhibitions": [], "literature": [], "condition_note": null, "image_url": "https://media.artmuseum.princeton.edu/iiif/3/collection/INV27356/full/,660/0/default.webp", "thumbnail_url": null, "local_image": null, "local_thumb": null, "iiif_manifest": "https://data.artmuseum.princeton.edu/iiif/objects/7280", "rights_statement": "IIIF manifest 'rights' is null; requiredStatement = Attribution: 'Princeton University Art Museum'. No open-access licence asserted.", "source_url": "https://artmuseum.princeton.edu/art/collections/objects/7280", "source_name": "Princeton University Art Museum", "evidence_tier": "institutional_record", "confidence": "strongly_supported", "review_state": "verified", "verified_on": "2026-08-12", "verified_by": "Project — record read directly from the holding institution's own published record", "notes": "Dimension recorded by the museum as 'Plate (sheet trimmed to plate): 13.8 x 10.5 cm'. No state given. NOTE: the record's 'Hollstein 9' appears anomalous against every other institution's 'Hollstein 20'; transcribed as printed, not corrected. Cross-check: Catalogued under a shortened title, but Bartsch 20 + New Hollstein 31.170 + date 1638 make the identification secure. INTERNAL INCONSISTENCY: Princeton's 'Reference Numbers' line (Biorklund and Barnard 38, Hind 156, Munz 22, New Hollstein 31.170, Hollstein 9) disagrees with its own bibliography, which cites Biorklund and Barnard no. 47, Hollstein no. 129, Munz no. 71 and New Hollstein no. 236 p. 144. Only Bartsch 20 and New Hollstein 170 are stable across the record. Also records the largest plate measurement in the census (138 mm), 2-3 mm above every other institution." }, { "id": "CN-risd-museum-rhode--84-198-1269", "holder_type": "museum", "institution": "RISD Museum (Rhode Island School of Design)", "department": null, "city": "Providence, RI", "country": "United States", "accession_number": "84.198.1269", "title_as_catalogued": "Self-portrait in a Velvet Cap with Plume", "date_as_catalogued": "1638", "medium_as_catalogued": "Etching on paper", "state": null, "state_catalogue": null, "state_verbatim": null, "state_confidence": "unknown", "catalogue_refs_verbatim": "", "api_source_url": null, "plate_mm": "135 x 103 mm ('13.5 x 10.3 cm (5 5/16 x 4 1/16 inches) (plate)')", "sheet_mm": null, "watermark": null, "paper": null, "collector_marks": [], "provenance_note": null, "credit_line": "Gift of the Fazzano Brothers", "exhibitions": [], "literature": [], "condition_note": null, "image_url": null, "thumbnail_url": null, "local_image": null, "local_thumb": null, "iiif_manifest": null, "rights_statement": "\"This object is in the Public Domain and available under a CC0 1.0 Universal (CC0 1.0) Public Domain Dedication\"", "source_url": "https://risdmuseum.org/art-design/collection/self-portrait-velvet-cap-plume-841981269", "source_name": "RISD Museum (Rhode Island School of Design)", "evidence_tier": "institutional_record", "confidence": "strongly_supported", "review_state": "verified", "verified_on": "2026-08-12", "verified_by": "Project — record read directly from the holding institution's own published record", "notes": "The record's IDENTIFICATION, SIGNATURE/INSCRIPTION/MARKS and DIMENSIONS field headings are present but EMPTY - so no state and no catalogue reference may be asserted. A web-search summary claimed 'third state of four' for this impression; that is NOT in the museum record and is rejected. Exhibited 'Past Made Present: Dutch Shadows in the Black Atlantic' (Sep 2022 - Aug 2023) and 'Rhode Island Collects Paper' (1986). RISD's label copy refers to 'the two versions of Self-Portrait in a Velvet Cap with Plume', which may indicate a second RISD impression or a loan; not resolved - see open_questions. API route: None. risdmuseum.org serves a Cloudflare block page to curl and WebFetch; retrieved by rendering in a browser." }, { "id": "CN-swann-auction-gall-x", "holder_type": "art_market", "institution": "Swann Auction Galleries (sale 2566, 'Old Master Through Modern Prints', 6 May 2021, lot 87)", "department": null, "city": "New York", "country": "United States", "accession_number": null, "title_as_catalogued": "Self Portrait in a Velvet Cap and Plume", "date_as_catalogued": "1638", "medium_as_catalogued": "Etching and drypoint", "state": null, "state_catalogue": null, "state_verbatim": "Biorklund's third state (of 3); Usticke's second state (i-l) (of 3), with the delicate details on the face and beard distinct and the shading lower right clear, before the Jean rework", "state_confidence": "unknown", "catalogue_refs_verbatim": "Bartsch 20; Biorklund 38-B; Hollstein (White and Boon) 20", "api_source_url": null, "plate_mm": "135 x 105", "sheet_mm": null, "watermark": null, "paper": null, "collector_marks": [], "provenance_note": null, "credit_line": null, "exhibitions": [], "literature": [], "condition_note": null, "image_url": null, "thumbnail_url": null, "local_image": null, "local_thumb": null, "iiif_manifest": null, "rights_statement": null, "source_url": "https://catalogue.swanngalleries.com/Lots/auction-lot/REMBRANDT-VAN-RIJN-Self-Portrait-in-a-Velvet-Cap-and-Plume?saleno=2566&lotNo=87&refNo=781521", "source_name": "Swann Auction Galleries (sale 2566, 'Old Master Through Modern Prints', 6 May 2021, lot 87)", "evidence_tier": "auction_catalogue", "confidence": "strongly_supported", "review_state": "verified", "verified_on": "2026-08-12", "verified_by": "Project — record read directly from the holding institution's own published record", "notes": "LOWER EVIDENCE TIER. Condition note verbatim: 'A very good, well-inked and crisp impression with strong contrasts and touches of burr on the beard, right eye and below the brim of the hat.' Sheet described as 'narrow to thread margins'. Valuable mainly because it records the Biorklund and Usticke state systems (both 3 states) and names the 'Jean rework' as the later intervention." }, { "id": "CN-the-metropolitan-m-60-598-66", "holder_type": "museum", "institution": "The Metropolitan Museum of Art", "department": null, "city": "New York", "country": "United States", "accession_number": "60.598.66", "title_as_catalogued": "Self-Portrait in a Velvet Cap with Plume", "date_as_catalogued": "1638", "medium_as_catalogued": "Etching", "state": null, "state_catalogue": null, "state_verbatim": null, "state_confidence": "unknown", "catalogue_refs_verbatim": "", "api_source_url": "https://collectionapi.metmuseum.org/public/collection/v1/objects/391675", "plate_mm": null, "sheet_mm": null, "watermark": null, "paper": null, "collector_marks": [], "provenance_note": null, "credit_line": "Bequest of Julia H. Manges, in memory of her husband, Dr. Morris Manges, 1960", "exhibitions": [], "literature": [], "condition_note": null, "image_url": "https://images.metmuseum.org/CRDImages/dp/original/DP814553.jpg", "thumbnail_url": null, "local_image": "/images/comparators/met-60-598-66-2000.jpg", "local_thumb": "/images/comparators/met-60-598-66-web.jpg", "iiif_manifest": null, "rights_statement": "isPublicDomain: true (Met Open Access, CC0). The rightsAndReproduction field is empty.", "source_url": "https://www.metmuseum.org/art/collection/search/391675", "source_name": "The Metropolitan Museum of Art", "evidence_tier": "institutional_record", "confidence": "strongly_supported", "review_state": "verified", "verified_on": "2026-08-12", "verified_by": "Project — record read directly from the holding institution's own published record", "notes": "Met objectID 391675. The API returns EMPTY strings for both 'dimensions' and 'state', and no catalogue reference field exists in the Met schema - so state and dimensions must remain null. The Met's own HTML page returned HTTP 429/403 to scraping, so no supplementary fields were recoverable; source_url is the objectURL supplied by the API itself." }, { "id": "CN-the-metropolitan-m-64-649-5", "holder_type": "museum", "institution": "The Metropolitan Museum of Art", "department": null, "city": "New York", "country": "United States", "accession_number": "64.649.5", "title_as_catalogued": "Self-Portrait in a Velvet Cap with Plume", "date_as_catalogued": "1638", "medium_as_catalogued": "Etching", "state": null, "state_catalogue": null, "state_verbatim": null, "state_confidence": "unknown", "catalogue_refs_verbatim": "", "api_source_url": "https://collectionapi.metmuseum.org/public/collection/v1/objects/391676", "plate_mm": null, "sheet_mm": null, "watermark": null, "paper": null, "collector_marks": [], "provenance_note": null, "credit_line": "Gift of Mrs. B. S. Oppenheimer, in memory of Dr. B. S. Oppenheimer, 1964", "exhibitions": [], "literature": [], "condition_note": null, "image_url": "https://images.metmuseum.org/CRDImages/dp/original/DP814552.jpg", "thumbnail_url": null, "local_image": "/images/comparators/met-64-649-5-2000.jpg", "local_thumb": "/images/comparators/met-64-649-5-web.jpg", "iiif_manifest": null, "rights_statement": "isPublicDomain: true (Met Open Access, CC0).", "source_url": "https://www.metmuseum.org/art/collection/search/391676", "source_name": "The Metropolitan Museum of Art", "evidence_tier": "institutional_record", "confidence": "strongly_supported", "review_state": "verified", "verified_on": "2026-08-12", "verified_by": "Project — record read directly from the holding institution's own published record", "notes": "Met objectID 391676. Second Met impression, distinct accession, distinct donor and distinct image file from 60.598.66. A title-scan over the Met's Rembrandt result set (1,097 objectIDs from q=Rembrandt) returned exactly these two impressions of B.20; the scan was stopped before completing every id because of API rate limiting, so a third Met impression cannot be formally excluded." }, { "id": "CN-bonhams-27424-2", "holder_type": "art_market", "institution": "Bonhams (sale 27424, lot 2, London, 13 December 2022)", "department": null, "city": "London", "country": "United Kingdom", "accession_number": null, "title_as_catalogued": "Self-Portrait in a velvet Cap with Plume", "date_as_catalogued": "1638", "medium_as_catalogued": "Etching, on heavy laid paper", "state": "II", "state_catalogue": "New Hollstein", "state_verbatim": "New Hollstein's second state (of four)", "state_confidence": "probable", "catalogue_refs_verbatim": "Bartsch 20; New Hollstein 170", "api_source_url": null, "plate_mm": null, "sheet_mm": "125 × 103", "watermark": "Partial Strasbourg Lily", "paper": "Heavy laid paper", "collector_marks": [], "provenance_note": null, "credit_line": null, "exhibitions": [], "literature": [], "condition_note": "Trimmed by 9 mm at the top and along the lower plate mark.", "image_url": null, "thumbnail_url": null, "local_image": null, "local_thumb": null, "iiif_manifest": null, "rights_statement": null, "source_url": "https://www.bonhams.com/auction/27424/lot/2/", "source_name": "Bonhams", "evidence_tier": "auction_catalogue", "confidence": "probable", "review_state": "provisional", "verified_on": "2026-08-12", "verified_by": "Project — lot page read directly", "notes": "An art-market record, not an institutional one, and weighted accordingly. Recorded because the watermark and the trimming are stated, which makes it a usable comparator for the paper question, and because it is the only impression of this print traceable in this house's public archive." }, { "id": "CN-np-rmb-001", "holder_type": "private", "institution": "Private collection", "department": null, "city": "Dubai", "country": "United Arab Emirates", "accession_number": "NP-RMB-001", "title_as_catalogued": "Self-Portrait in a Velvet Cap with Plume", "date_as_catalogued": "1638", "medium_as_catalogued": "Etching, possibly with drypoint (working record, unexamined)", "state": null, "state_catalogue": null, "state_verbatim": "Working record states 'state III of IV, without signature'. Not verified; see RQ-01 and RQ-02.", "state_confidence": "unknown", "catalogue_refs_verbatim": "Bartsch 20; New Hollstein 170 (as recorded in the acquisition documentation, not yet checked against the catalogues)", "api_source_url": null, "plate_mm": null, "sheet_mm": "c. 137 × 104 (convention unstated; see RQ-03)", "watermark": null, "paper": null, "collector_marks": [], "provenance_note": "Bonhams, New York, 2023; private collection, Dubai. No ownership documented before 2023.", "credit_line": "Private collection, Dubai", "exhibitions": [], "literature": [], "condition_note": "Trimmed at the left margin; wrinkling and dampstaining at lower left extending partly into the image; unmounted at purchase. Not assessed by a conservator.", "image_url": null, "thumbnail_url": null, "local_image": null, "local_thumb": null, "iiif_manifest": null, "rights_statement": "Metadata CC0 1.0. No images published.", "source_url": "https://rembrandt.aidispatch.xyz/object/np-rmb-001", "source_name": "The Rembrandt Open Impression Project", "evidence_tier": "user_submission", "confidence": "possible", "review_state": "needs_review", "verified_on": null, "verified_by": null, "notes": "This project's own sheet, listed on the same terms as every other row and at the weakest evidence tier, because that is what its documentation currently supports. It is not the reference impression for anything; the institutional rows above are better evidence about this plate than this one is." } ] }