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Originally Posted by JollyElm
Hey, how do you determine that cards are actually proofs and not simply printing errors? I have 2 blank backed 72's around here somewhere and have always just referred to them as 'blank backs.' I wonder if they are proofs. There are no cropping differences between them and their counterparts.
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I don't know if you'd be able to tell if the blank backs were proofs or not unless there were something different about the front of the card, they used a different type of cardboard and/or you had something documenting that it is a proof from Topps. I have always just referred to them as blank backs as well.
Zach... Any proofs of Brooksie from '72? By the way I really like the '72 O's team shot.