Nobody can predict the future, but that seems crazy to me. PSA currently has 4,228 Griffey 89 UD cards in a 10, and only 1,658 graded 1952 Mantle's total. The allure of a PSA 10 is crazy to me, especially when it is so common and easy to find. Not to mention the 32k+ Griffey PSA 9's, most of which are probably indistinguishable from the PSA 10's.
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