I would guess that the PSA 4 graded card received a lower grade due to the poor centering. The owner when submitting the card for grading may have indicated that the did not want an (OC) qualifier. I already have a 56 Topps Mantle but if I was in the market for one, I would pick the PSA 3 graded card over the PSA 4 due to the 3 having much better centering.
Happy collecting
Duane Clark
Last edited by dclarkraiders; 04-26-2018 at 01:47 PM.
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