Japanese Promo Game Boy PSA Population Report
The PSA population report for Japanese Promo Game Boy counts 17,033 grades across 5 cards as of September 19, 2026. 3,803 of those grades are PSA 10s, a set-wide gem rate of 22.3%. The table lists every card of this set in GemRate's public PSA population tracking, with PSA 10 and PSA 9 counts, total grades, and per-card gem rate.
- Most graded: Dragonite-Holo #149, 10,892 total grades.
- Fewest PSA 10s: Dark Fearow #22, 41 PSA 10s out of 253 graded.
| # | Card | PSA 10 | PSA 9 | Total graded | Gem rate |
|---|---|---|---|---|---|
| 22 | Dark Fearow | 41 | 116 | 253 | 16.2% |
| 149 | Dragonite-Holo | 2,173 | 3,766 | 10,892 | 20.0% |
| 150 | Great Rocket's Mewtwo-Holo | 824 | 1,222 | 2,874 | 28.7% |
| 249 | Lugia-Holo | 5 | 2 | 7 | n/a |
| 249 | Lugia-Holo | 760 | 1,207 | 3,007 | 25.3% |
Gem rate is PSA 10s as a share of total grades, shown only for cards with at least 25 total grades; smaller samples say almost nothing about real gem odds. Source: GemRate public PSA population tracking, refreshed with every BetterPop data pull. Figures on this page regenerate on every site build.
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