I bought a group of 6-8 1910 Obak commons a little while back that were glued to a sheet of green poster board. Looked as if they'd been hung in a picture frame at some point in the last 10 years or so. I decided to soak them to remove the poster board and was subsequently distracted by something shiny and neglected to remove them from the water for a day or so. When I did remove them, the backs were green (still are), just like yours.
Last edited by Anthony S.; 06-23-2009 at 01:50 PM.
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