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Posted By: Scott

What "reasonable" technology exists for detecting each alteration type?

I read in one of Lipset's newsletters that corners could be built up on t206's and '33 Goudeys, using material from other cards, in such a way as to be undetectable...which makes me wonder, what can black lights actually help detect? Glue? if so, what types? I'm certain that all of these questions have answers. If board members responses, like mine and yours, is "I don't know", that's still good information to have.