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barrysloateCards such as the Alperman no stripes that Art displayed as well as those such as Schulte are proofs and one should expect that proofs would have visible differences. What about the Eddie Collins batting pose, both unique and perhaps the most valuable and famous of all T206 proofs? Also, Mastronet had a group of proofs several years ago that had four players unknown in the set. I think with proofs one should expect differences, and the value may be based on how dramatically different it looks from the card issued for circulation (as well as the rarity, although virtually all are unique or close to unique).