Found an answer. It appears more '51s have been graded. From PSA:
1,150 copies of Mantle's '51 Bowman rookie card have passed under the magnifying glass at PSA and 46 PSA 8s and nine PSA 9s have resulted, along with a solitary PSA 10 example. Contrast these numbers with his 1952 Topps rookie, which has been graded 924 times and awarded 29 PSA 8s, one PSA 8.5, seven PSA 9s, and three Gem Mint 10s.
Last edited by scmavl; 03-27-2011 at 06:37 AM.
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