What caused the dampstaining, and is it stable?

Two distinct things are being asked. The conservation question is whether the staining is active and threatens the support — that determines whether anything should be done. The historical question is what the staining records: water damage is an event in the sheet's life, and its pattern can indicate how the print was stored, whether it was once bound or mounted, and whether it shares a history with other sheets bearing the same pattern. The project will not commission treatment to improve appearance. It will act on a stability finding.

A sale-catalogue description of wrinkling and dampstaining at the lower left extending partly into the image. No examination, no assessment of activity, no pH measurement.

• 8Unreviewed submissionOwner's working object record, assembled 2026 · Owner / steward · 2026-08

• The staining is historic and stable.

  Possible

  The most common finding for damage of this kind, and the project's working assumption for handling purposes — which is to say, it is treated as unknown and handled carefully.

1. 01Conservator examination, including examination under ultraviolet light for the extent of the staining and any previous treatment.
2. 02Assessment of whether tidelines are defined and whether there is any evidence of mould.
3. 03Documentation of the pattern in raking light, which sometimes shows the fold or stacking that produced it.

A baseline condition report by a qualified paper conservator.

• Conservation and material studies