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Trainer · Supporter
Illustrated by Ken Sugimori
Professor Oak's Research 149/165 Expedition Base Set PSA Population
Trainer · Supporter
Illustrated by Ken Sugimori
Professor Oak's Research #149 from Expedition Base Set currently has 68 PSA graded copies, including 19 PSA 10s, for a 27.9% PSA gem rate. Its PSA population has remained unchanged over the last 10 days.
PSA, CGC, and BGS data as of Oct 27, 2026.
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Graded population
| Grade | PSA | CGC | BGS |
|---|---|---|---|
| Total Graded | 68 | 107 | 2 |
| Pristine / Black Label % | — | 1.9% | 0% |
| Gem Rate | 27.9% | 19.6% | 50.0% |
| Perfect / Black Label | — | 0 | 0 |
| Pristine | — | 2 | — |
| 10 | 19 | 19 | 0 |
| 9.5 | — | 4 | 1 |
| 9 | 24 | 21 | 1 |
| 8.5 | 0 | 15 | 0 |
| 8 | 16 | 14 | 0 |
| 7.5 | 0 | 4 | 0 |
| 7 | 6 | 9 | 0 |
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| 6.5 | 0 | 4 | 0 |
| 6 | 1 | 3 | 0 |
| 5.5 | 0 | 3 | 0 |
| 5 | 2 | 3 | 0 |
| 4.5 | 0 | 1 | 0 |
| 4 | 0 | 0 | 0 |
| 3.5 | 0 | 0 | 0 |
| 3 | 0 | 0 | 0 |
| 2.5 | 0 | 0 | 0 |
| 2 | 0 | 0 | 0 |
| 1.5 | 0 | 0 | 0 |
| 1 | 0 | 0 | 0 |
| 0 | — | 5 | — |
Market value
No market estimate yet.
