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runscottI just cleaned up a Cuban 1910 Jack Johnson card that had been glued into an album. It had a large splotch of grey paper glued to each corner. Since the front looked like a Mayo, I wasn't sure if it could be soaked (I don't know about Mayos either), so I dipped a cloth into hot water and dabbed at the paper splotches until they were soaked. I then gently rubbed the paper off. Result: card looked as if it had never been in an album.
Question - could I have soaked the card?