Proving Grounds · 21 · Rare · 2025
The raw price over time, with any graded series laid over the same axis — the comparison a grading decision turns on.
Premium4 graded series can be laid over this line — see what the slab did while the raw price moved.Unlock
Every graded price published, next to how many copies exist at that grade.
| Grade | Market | vs raw | Population | Pop higher |
|---|---|---|---|---|
| ▶PSA 10 | $509 | 47.8× | — | — |
| Grade | Market | vs raw | Population | Pop higher |
|---|---|---|---|---|
| ▶BGS 10blended | $661 | 62.2× | — | — |
| Grade | Market | vs raw | Population | Pop higher |
|---|---|---|---|---|
| ▶Grade 9.5 | $23.00 | 2.2× | — | — |
| ▶Grade 9 | $20.50 | 1.9× | — | — |
A model's opinion, not investment advice.