Stains on sepia-toned prints

I am seeking advice on possible causes of pink staining across the
image area of a sepia-toned image on fibre based paper. Our records
indicate that the image, one of two made contemporaneously of the
same image, was made on Ilford fibre-based paper in the early
1970's. Both images were sepia-toned, we believe using the standard
Kodak hypo alum toner T-1a. Both have been stored in the same
solander box under museum conditions since acquisition soon after
making.

One of the images exhibits a distinct pink tone uniformly across the
whole of the image area.

Robert Deane
Honorary Researcher
National Gallery of Australia


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                  Conservation DistList Instance 15:38
                Distributed: Tuesday, November 20, 2001
                       Message Id: cdl-15-38-022
                                  ***