Base Set#51PSA 10 Gem Mint
Koffing Base Set 1st Edition PSA 10 Price History
Live PSA 10 Gem Mint price tracking for the 1999 Pokemon Base Set Koffing (#51). Data compiled from verified sold listings on eBay, Goldin, and Fanatics Collect.
Current PSA 10 Market Avg
$543
+109.2% over the last 12 monthsCompare Koffing Variants
Koffing was printed across multiple Base Set variants. Click any variant above to view its price history.
All-Time High
$543
May 2026
All-Time Low
$152
Jun 2022
Since Feb 2021
+167.0%
total return
Avg Monthly Price
$230
64 months tracked
Recent Sales Avg
$495
29 listings tracked
Recent Sales Range
$300–$873
low to high
PSA 10 Monthly Price History
Monthly average PSA 10 Gem Mint price for the 1999 Pokemon Base Set Koffing (#51). Data covers Feb 2021 – May 2026.
Recent Gem Mint Sales
| Date Sold | Price | Grade | Source | Listing |
|---|---|---|---|---|
| 2026-05-12 | $873 | PSA 10 | eBay | 1999 Koffing 1st Edition #51 PSA 10 GEM MINT Base Set Shadowless Pokemon |
| 2026-04-26 | $750 | PSA 10 | eBay | Pokemon PSA 10 GEM MINT Koffing 1st Edition Base Set Shadowless 1999 Card 51/102 #102 |
| 2026-04-25 | $439 | PSA 10 | eBay | 1999 POKEMON BASE SET 1ST EDITION SHADOWLESS #51 KOFFING PSA 10 #51 |
| 2026-04-16 | $358 | PSA 10 | eBay | PSA 10 1st Edition Koffing 51/102 – 1999 Base Set Thick Stamp Pokemon Card |
| 2026-04-06 | $335 | PSA 10 | eBay | Pokemon Koffing Base Set Shadowless 1st Edition #51 PSA 10 Gem Mint |
| 2026-04-05 | $371 | PSA 10 | eBay | Pokemon Koffing Base Set Shadowless 1st Edition #51 PSA 10 Gem Mint |
| 2026-03-27 | $525 | PSA 10 | eBay | Pokemon Koffing 1st Edition Base Set #51 PSA 10 Gem Mint Wizards Of The Coast #51 |
| 2026-03-16 | $455 | PSA 10 | eBay | 1999 POKEMON BASE SET 1ST EDITION #51 KOFFING PSA 10 GEM MT #51 |
| 2026-03-12 | $600 | PSA 10 | eBay | 1999 POKEMON BASE SET 1ST EDITION #51 KOFFING PSA 10 #51 |
| 2026-03-10 | $525 | PSA 10 | eBay | 1999 Pokemon Koffing 1st Edition Base Set Shadowless Card 51/102 PSA 10 #102 |
| 2026-03-09 | $537 | PSA 10 | eBay | Pokemon PSA 10 GEM MINT Koffing 1st Edition Base Set Shadowless 1999 Card 51/102 #102 |
| 2026-03-08 | $354 | PSA 10 | eBay | 1999 POKEMON 1ST EDITION BASE SET #51/102 KOFFING PSA 10 51/102 |
| 2026-03-06 | $604 | PSA 10 | eBay | Pokemon PSA 10 GEM MINT Koffing 1st Edition Base Set Shadowless 1999 Card 51/102 #51 |
| 2026-03-02 | $680 | PSA 10 | eBay | Pokemon PSA 10 GEM MINT 1999 Koffing 1st Edition Base Set Shadowless Card 051/102 |
| 2026-02-20 | $539 | PSA 10 | eBay | Pokemon PSA 10 GEM MINT Koffing 1st Edition Base Set Shadowless 1999 Card 51/102 #51 |
| 2026-02-17 | $519 | PSA 10 | eBay | Pokemon PSA 10 GEM MINT Koffing 1st Edition Base Set Shadowless 1999 Card 51/102 #102 |
| 2026-02-09 | $385 | PSA 10 | eBay | 1999 POKEMON BASE SET 1ST EDITION #51 KOFFING PSA 10 #51 |
| 2026-01-29 | $520 | PSA 10 | eBay | Pokemon Koffing 1st Edition Shadowless Base Set #51/102 PSA 10 Gem Mint 051/102 |
| 2026-01-29 | $500 | PSA 10 | eBay | 1999 Pokemon Base Set 1st Edition Koffing #51 PSA 10 GEM MINT 051/102 |
| 2026-01-29 | $500 | PSA 10 | eBay | Pokemon PSA 10 GEM MINT Koffing 1st Edition Base Set Shadowless 1999 Card 51/102 #102 |
| 2026-01-29 | $500 | PSA 10 | eBay | 1999 Pokemon Koffing 1st Ed Shadowless 51/102 Base Set – PSA 10 051/102 |
| 2026-01-25 | $490 | PSA 10 | eBay | ***PSA 10 Koffing 1st Edition #51 Base Set*** Pokemon Kid Icarus |
| 2026-01-18 | $420 | PSA 10 | eBay | PSA 10 Koffing 1st Edition 1999 Pokemon Base Set #51 |
| 2026-01-06 | $334 | PSA 10 | eBay | PSA 10 1st Edition Koffing 51/102 – 1999 Base Set Thick Stamp Pokemon Card |
| 2025-12-31 | $300 | PSA 10 | eBay | 1999 Pokemon Base Set Shadowless 1st Edition Koffing #51 PSA 10 GEM MINT English 051/102 |
| 2025-12-27 | $450 | PSA 10 | eBay | Pokemon PSA 10 GEM MINT Koffing 1st Edition Base Set Shadowless 1999 Card 51/102 051/102 |
| 2025-12-12 | $377 | PSA 10 | eBay | 1999 POKEMON BASE SET 1ST EDITION #51/102 KOFFING PSA 10 51/102 |
| 2025-12-06 | $510 | PSA 10 | eBay | 1999 Pokemon Koffing 1st Ed Shadowless 51/102 Base Set – PSA 10 Gem Mint 051/102 |
| 2025-12-01 | $600 | PSA 10 | eBay | 1999 Pokemon Base Set Shadowless 1st Edition Koffing #51 PSA 10 GEM MINT English 051/102 |
| 2025-10-24 | $56 | CGC 10 | eBay | Pokémon TCG Koffing Base Set 1st Edition CGC 10 Gem Mint & Goldeen Base Set 2 Portuguese 51/102 |
| 2025-05-09 | $115 | CGC 10 | eBay | Koffing Base Set 51/102 1st Ed Shadowless CGC 10 GEM MINT – Vintage 1999 Pokémon 051/102 |
| 2025-04-24 | $41 | CGC 10 | eBay | CGC 10 GEM MINT Koffing Base Set Shadowless 1st Edition 51/102 Pokemon Card 51/102 |
| 2025-03-19 | $140 | CGC 10 | eBay | CGC 10 GEM MINT Koffing Base Set Shadowless 1st Edition 51/102 Pokemon Card 51/102 |
| 2025-02-09 | $100 | CGC 10 | eBay | CGC 10 GEM MINT Koffing Base Set Shadowless 1st Edition 51/102 Pokemon Card 51/102 |
| 2025-02-08 | $135 | CGC 10 | eBay | Pokemon Koffing #51 Base Set 1st Edition Shadowless 1999 – CGC 10 Gem Mint #51 |
| 2024-11-25 | $48 | CGC 10 | eBay | 1999 Pokemon Base Set 1ST EDITION SHADOWLESS Koffing 51/102 – CGC 10 #51 |
| 2024-06-15 | $165 | CGC 10 | eBay | CGC 10 Pokemon Card Koffing Base Set 1st Edition 1999 Non Holo 51/102 GEM MINT 51/102 |
| 2024-03-12 | $20 | CGC 10 | eBay | Pokemon Koffing 1st Edition Base Set 51/102 CGC Gem Mint 10 51/102 |
38 verified gem-mint sales (PSA 10, CGC 10, BGS 10, and other 10-grade equivalents). PSA 10 carries the highest premium; CGC 10 and BGS 10 typically trade at a slight discount. Prices exclude shipping.
About Koffing (Base Set 1st Edition)
Basic Grass/Poison. Foul Gas attack causes Confusion or Poison — pre-evolution of Weezing.
The Base Set 1st Edition print is the rarest variant. It carries the “Edition 1” stamp on the lower-left of the artwork and uses the shadowless border. WotC printed 1st Edition copies for only the first few weeks of the 1999 U.S. release.
How to identify a 1st Edition Koffing:
- “Edition 1” stamp on the lower-left of the artwork box
- No drop-shadow on the artwork box (“shadowless”)
- WotC copyright at the bottom
- 1999 copyright date
Related Pages
FAQ
- How much is a PSA 10 Koffing Base Set 1st Edition worth?
- As of May 2026, the monthly average sold price is $543. Individual sales over the last several months ranged from $300 to $873. Prices are volatile — check the chart above for the latest trajectory.
- How do I tell if my Koffing is a 1st Edition?
- Look for the markers listed in the identification section above. The key distinguishing features for the 1st Edition variant are: “edition 1” stamp on the lower-left of the artwork box, no drop-shadow on the artwork box (“shadowless”).
- Where does this price data come from?
- All chart data and recent sales are compiled from verified sold listings across eBay, TCGPlayer, Goldin, and Fanatics Collect. Last refreshed 2026-05-24.
Price data compiled from verified sold listings across major marketplaces and auction houses. Last updated 2026-05-24. This page is informational only and is not investment advice. Card image courtesy of the Pokemon TCG API.