Professor's Research

13%of 24 graded came back a PSA 10. A small sample, so one grade moves it.

How they graded

Every grade

Copies at each grade, how many sit at that grade or higher, and PSA’s price where it lists one.

GradeCopiesPSA price

PSA 103—

PSA 9912 at 9+—

PSA 8618 at 8+—

PSA 7220 at 7+—

PSA 6222 at 6+—

PSA 5022 at 5+—

PSA 4022 at 4+—

PSA 3123 at 3+—

PSA 2023 at 2+—

PSA 1023 at 1+—

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