Koffing
Base · #51/102 · Common · 1999
Printings & price history
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Graded values
Grades 1–6 are estimates modeled from the raw price — PSA/CGC/BGS 7–10 and Ungraded are live tracked market values.
PSA 10 chart is building — graded values are tracked nightly, a new point appears each day.
Graded population census · updated 2026-07-07
Population data from PriceCharting, updated monthly.
Attacks
“Because it stores several kinds of toxic gases in its body, it is prone to exploding without warning.”
How much is Koffing #51/102 worth?
As of August 14, 2026, Koffing #51/102 from Base sells for around $0.91 in raw, ungraded condition. Across the 3 printings we track, copies run anywhere from $0.10 to $9,999.00 depending on the version you're holding.
Grading changes the math on this one: a PSA 10 is valued around $124.66, roughly 137.0x the raw price, while a PSA 9 sits near $30.39. 2,699 copies have been graded to date, and 23% of them came back a 10 — worth knowing before you pay grading fees.
We update this valuation every night from live market data and verify it against real completed sales — see the chart above for how Koffing has moved over time.
