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PSA 10: PriceCharting; last PSA 10 sale May 9, 2026
GemDelta shows Koffing (Base Set #51) at $3.85 market price (PriceCharting raw (eBay sold fallback)). Its Delta multiple is 74.6x.
A PSA 10 Koffing (Base Set #51) is currently shown at $287. GemDelta labels this as an unverified PriceCharting guide fallback rather than verified recent sales.
GemDelta records a 23.0% gem rate for Koffing (Base Set #51), with 632 PSA 10 copies out of 2,749 total PSA grades and a 74.6x Delta. That describes the grading profile; it is not financial advice.
| Date | Sale |
|---|---|
| May 9, 2026 | $340.76 |
| Apr 17, 2026 | $510.00 |
| Mar 22, 2026 | $229.99 |