Base Set · Base · Released Jan 9, 1999
$32.31
Market price · Raw NM · 1st Ed Shadowless Normal · as of Oct 12, 2026
Attacks
Foul Gas
10
Grass, Grass · Flip a coin. If heads, the Defending Pokémon is now Poisoned; if tails, it is now Confused.
Because it stores several kinds of toxic gases in its body, it is prone to exploding without warning.
+$15.26 (89.50%)past year
Price history for Raw NM, 1Y window: from $17.05 on Oct 12, 2025 to $32.31 on Oct 12, 2026, across 173 points.
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Total graded
2,822
Gem rate
22.5%
185 sales on record · 1st Ed Shadowless Normal · latest Sep 7, 2026
| Date | Price | Grade | Marketplace | Listing |
|---|---|---|---|---|
| Jun 27, 2026 | $110.00 | Raw (ungraded) | ebay | Pokémon Koffing #51/102 Shadowless 1st Edition 1999 Base Set |
| May 24, 2026 | $66.00 | Raw (ungraded) | ebay | 1999 Pokémon Koffing 051/102 Base Set (Shadowless) Regular 1st edition PSA |
| May 24, 2026 | $42.00 | Raw (ungraded) | ebay | 1999 Pokémon Koffing 051/102 Base Set (Shadowless) Regular 1st Edition PSA |
| May 17, 2026 | $40.00 | Raw (ungraded) | ebay | 1999 Pokémon Koffing 051/102 Base Set (Shadowless) Regular 1st edition PSA |
| May 16, 2026 | $15.00 | Raw (ungraded) | ebay | CGC MINT9 Koffing Pokemon 1999 Base Set 1st Edition Shadowless 51/102 |
| May 15, 2026 | $199.00 | Raw (ungraded) | ebay | GUINNESS WORLD RECORD 2000 Pokemon Koffing Base Set -1st Edition Chinese 51/102 |
| Feb 20, 2026 | $25.00 | Raw (ungraded) | ebay | 1999 Pokémon Base 1st Ed KOFFING #51/102 💎 DSG 8.5 NM/Mint |
| Jan 5, 2026 | $35.00 | Raw (ungraded) | ebay | CGC MINT9 Koffing Pokemon 1999 Base Set 1st Edition Shadowless 51/102 |
| Dec 20, 2025 | $69.99 | Raw (ungraded) | ebay | 1999 Pokemon Base Set #51 Koffing 1st Edition KSA 9.5 NGM |
Past performance is not indicative of future results.
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