Professor Sycamore 028 — XY Promos
Promo · XY Promos
Japanese Professor Sycamore 28 XY Promos price history, graded prices and PSA population by grade. PSA pop 5 (40% gem).
PSA population
- Total graded: 5
- Gem rate (PSA 10 share): 40%
- Population week: 2026-10-26
| Grade | Graded |
|---|---|
| PSA 8 | 1 |
| PSA 9 | 2 |
| PSA 10 | 2 |