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Gym
Pokémon · Basic
Illustrated by Ken Sugimori
Koga's Koffing 79/132 Gym Challenge Unlimited PSA Population
Pokémon · Basic
Illustrated by Ken Sugimori
Koga's Koffing #79 from Gym Challenge Unlimited currently has 75 PSA graded copies, including 21 PSA 10s, for a 28.0% PSA gem rate.
PSA, CGC, and BGS data as of Oct 27, 2026.
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Graded population
| Grade | PSA | CGC | BGS |
|---|---|---|---|
| Total Graded | 75 | 218+1 | 2 |
| Pristine / Black Label % | — | 3.2%-0.01% | 0% |
| Gem Rate | 28.0%-0.4% | 22.0%-0.1% | 0% |
| Perfect / Black Label | — | 0 | 0 |
| Pristine | — | 7 | — |
| 10 | 21 | 41 | 0 |
| 9.5 | — | 10 | 0 |
| 9 | 36 | 38 | 0 |
| 8.5 | 0 | 44 | 1 |
| 8 | 12 | 26+1 | 1 |
| 7.5 | 0 | 22 | 0 |
| 7 | 3 | 9 | 0 |
PSA total graded is the grader's reported population (75). The grade rows add up to 74.
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| 6.5 | 0 | 5 | 0 |
| 6 | 1 | 6 | 0 |
| 5.5 | 0 | 3 | 0 |
| 5 | 1 | 2 | 0 |
| 4.5 | 0 | 3 | 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 | — | 2 | — |
Market value
No market estimate yet.
