Koffing 1999-2000 #51 Value
Base Set · Card 51/102 · Common · 1999
Koffing is a Common card, Grass-type, 50 HP (#51/102) from the Base Set set, released in 1999, illustrated by Mitsuhiro Arita. A raw copy is worth about $3.28, rising to $98 in PSA 10 — 29.7× the ungraded price.
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Koffing price history
Ungraded value is $3.28, down 27% over the past year, with an all-time high of $6.50 in May 2025.
Market value over time by grade. Hover for any month; tap a grade to toggle its line.
Koffing price at every grade
The market value at each PSA grade, with how many exist (population). 91 graded copies exist — only 19 are PSA 10.
| Grade | Value | Population |
|---|---|---|
| Raw / Ungraded | $3.28 | — |
| PSA 10 (Gem Mint) | $98 | 19 |
| Grade 9 | $36 | 34 |
| Grade 8 | $29 | 26 |
| Grade 7 | $15 | 5 |
| Grade 6 | $12 | 3 |
| Grade 5 | $10 | 3 |
| Grade 4 | $9.00 | 1 |
| Grade 3 | $8.00 | – |
| Grade 2 | $7.00 | – |
| Grade 1 | – | – |
Prices & population from PriceCharting. Grade values are PSA-based; population is split by grading company (PSA / CGC).
Card details
- Set
- Base Set
- Card number
- 51 of 102
- Rarity
- Common
- Type
- Grass
- HP
- 50
- Stage
- Basic
- Weakness
- Psychic ×2
- Retreat cost
- 1
- Illustrator
- Mitsuhiro Arita
- Released
- 1999
Attacks
- Foul Gas10Grass · Grass
Flip a coin. If heads, the Defending Pokémon is now Poisoned; if tails, it is now Confused.
Other Koffing cards & values
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