Base/#51/102Gembook Valuei·PSA 6As of Jun 14, 2026 · updated daily at 6:00 AM PT
Confidence Limited · weighted median of 3 verified sales
Fair range $31 – $60
Confidence Limited · weighted median of 3 verified sales
Fair range $31 – $60
Koffing
$31#10554 Overall#1355 in Base▲ 6.5%SET · 30D
1ST EDITION · PSA 6G
Price History▲ 181.8%
Details
SetBase
Number51 / 102
Released1999
PSA population102
Price confidenceLimited
Fair range$31 – $60
Last sale$31 · Jun 10, 2026
Live listings0 · checked daily
Recent sales
3 verified · 9 shownJun 10, 2026eBay$31+$0
May 23, 2026eBay$60+$29
Apr 13, 2026eBay$35+$4
Mar 16, 2026eBay$15−$16
Feb 8, 2026eBay$16−$16
Live listings
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How we price this
Gembook Value is the weighted median of 3 verified eBay sales. Shill bids, unpaid items, and outliers are filtered out — the numbers you see actually cleared.