Okay, so we know why thieves add stamps to the back of a good Conlon print - in this case to 'assure' the buyer that it was a real Conlon, but why did 'the real' Charles Conlon add stamps, and what was the purpose of each particular stamp he used? (Same for his signatures)
It seems a bit random, and maybe that is the answer.
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$co++ Forre$+
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