Professor Elm's Training Method
Pop 1 at PSA 10
11%of 9 graded came back a PSA 10. A small sample, so one grade moves it.
How they graded
Printings
Every grade
Every grade
Copies at each grade, how many sit at that grade or higher, and PSA’s price where it lists one.
GradeShare of copiesCopiesPSA price
PSA 101—
PSA 934 at 9+—
PSA 815 at 8+—
PSA 716 at 7+—
PSA 617 at 6+—
PSA 507 at 5+—
PSA 407 at 4+—
PSA 307 at 3+—
PSA 229 at 2+—
PSA 109 at 1+—
Takes
Population from PSA as of Sep 13, 2026. It counts grading submissions, not every copy that exists.
