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WPI keep reading the post from PSA supporters claiming that post 1930 PSA cards realize higher prices than SGC. What evidence do you have? The problem with SGC cards is there are very few avaialable for sale post 1930, they seem to get quickly gobbled up. Some recent evidence I have found indicates SGC is selling higher than PSA. For example in the recent Superior auction there were 2 examples where there are PSA and SGC equivilants a 52 T Jackie Jensen NM-MT and 57 T Williams NM-MT the SGC copies performed significantly better than PSA. The Diamond Stars SGC graded in that auction performed at least on par with the psa counterparts and the half grades added significant value to the SGC cards. Recently on ebay SCGAYNOR sold a 48 Leaf Robinson SGC 84 that realized in excess $3500, I challange you to find a PSA copy that sold for that much in NM.