Koffing
Sold price movement
- 12 months ago
- $1.62£1.22€1.47
- Today
- $1.68£1.27€1.52
- Change
- +$0.06+£0.05+€0.05 (+3.7%)
Market activity
| Price type | Pop share | PopulationPop | Sold 90d | Median | Price |
|---|---|---|---|---|---|
| Raw | – | 183 | $1.79£1.35€1.62 | $1.68£1.27€1.52 | |
| PSA 3 | 1 | – | – | – | |
| PSA 5 | 2 | – | – | – | |
| PSA 6 | 3 | 2 | – | $18.99£14.36€17.18 | |
| PSA 7 | 4 | 2 | – | $12.85£9.72€11.63 | |
| PSA 8 | 18 | 4 | – | $23.01£17.40€20.82 | |
| PSA 9 | 61 | 13 | $36£27.22€32.57 | $29.20£22.08€26.42 | |
| CGC/BGS 9.5 | – | – | – | $32£24.19€28.95 | |
| PSA 10 | 54 | 9 | $126£95.26€114.01 | $129.99£98.28€117.62 | |
About these prices
37.8% of copies sent to PSA come back a 10. Sold and median are 90 days of PSA sales. The 9.5 is a CGC and BGS grade, so it carries no PSA population.
Priced from 1,006 completed sales, updated Nov 14, 2026.
Price history
Recent sales
1,006 completed listings on eBay, Fanatics CollectKoffing 51/102 1999 Base Set Pokemon Card TCG WOTC Vintage Common - Nm/Vlp$5.40£4.08€4.89Koffing 51/102 Common Base Set Unlimited Pokemon Moderately Played 51/102$4£3.02€3.62Pokemon TCG-Koffing 051/102 Base Set Regular -Non Holo-Vintage-Lp 051/102$3.93£2.97€3.56Koffing 51/102 Common Base Set Unlimited Pokemon Lightly Played 51/102$2.99£2.26€2.71Koffing #51/102 Base Set Unlimited (Mitsuhiro Arita) Pokemon - NM-/LP+ 51/102$2.95£2.23€2.67Show 288 more, the newest 300 of 1,006
Koffing 51/102 Common Base Set Unlimited Pokemon Lightly Played 51/102$2.49£1.88€2.25Pokemon TCG | Koffing 51/102 | Base Set Unlimited Common | Near Mint 51/102$2.38£1.80€2.15Koffing 51/102 WOTC Pokemon TCG 1999 Base Set Unlimited Lightly Played/Near Mint 51/102$1.99£1.50€1.80Koffing 51/102 Common Base Set Unlimited Pokemon Lightly Played 51/102$1.79£1.35€1.62
9WOTC 1999 Koffing 51/102 Base Set Pokemon TCG English TAG 9 Graded Card 51/102$21.50£16.26€19.459Pokemon Koffing Base Set 1999 Card 51/102 CGC 9 Mint Graded Pokemon TCG 51/102$11.80£8.92€10.6810Pokémon 1999 Base Set Koffing 51/102 Regular Common English PSA 10 Gem Mint 051/102$129.99£98.28€117.628Pokemon TCG Koffing Base Set 51/102 Regular Common CGC 8 English 1999 WOTC 051/102$10£7.56€9.0510Koffing (PSA GEM MINT 10) - Unlimited - Pokemon Base Set 1999 #51/102 051/102$150£113.41€135.728Pokémon TCG Koffing 51/102 Base Set Common English 1999 PSA 8 Graded 51/102$25.76£19.48€23.31
91999 English Pokemon Base Set Unlimited Koffing Card 51/102 PSA 9 051/102$64.99£49.14€58.808Pokémon TCG CGC 8 Koffing Base Set 1999 Regular 51/102 English Basic Common 051/102$19.99£15.11€18.099Pokémon Koffing 51/102 Base Set Unlimited PSA 9 English Regular Common 1999 051/102$44.99£34.01€40.719Pokemon Cards - PSA 9 Koffing 51/102 - Base Set Unlimited - MINT - PSA9 051/102$31.14£23.54€28.189Pokemon Cards - PSA 9 Koffing 51/102 - Base Set Unlimited - MINT - PSA9 051/102$31.14£23.54€28.18More from Base Set
All 102 cards →
Charizard
Charizard (Black Dot Error)
Blastoise
Venusaur
Mewtwo
AlakazamGrading odds
CGC has graded 2,004 copies. Where they landed:
These are CGC grades. The prices above are for PSA slabs, and a CGC 10 is not the same grade as a PSA 10, so read the two as separate markets rather than one.
Why the verdict weights the odds
Only 28.4% of copies reach a 10, which is why the top price is the wrong number to plan around. Weighting each grade’s PSA price by these odds, a submission is worth $54.23£41€49.07 on average against $101.67£76.87€91.99 for the card plus $79.99£60.48€72.38 at Regular, the cheapest level PSA will insure it at. That loses $47.44£35.87€42.92, so a copy is worth more raw.
What CGC copies sold for
Sold prices from listings that named the grader and the grade, not asking prices, and not a PSA figure converted across. A CGC 9 runs about 0.44x the PSA 9 on the cards where we hold both, but the spread is wide enough that it is only worth quoting where copies actually traded, which is what these are. The count beside each price is how many.
CGC 9 and 9.5 are one row on purpose. A CGC 9.5 sells for 3% more than a 9 across the corpus and is the cheaper of the two on nearly half of cards, so the market is not pricing them apart and splitting them here would invent a distinction. BGS is left split because there the same test says a 9.5 really is worth about 30% more.
| Grade | Median sold | Sales |
|---|---|---|
| CGC 9 or 9.5 | $14.50£10.96€13.12 | 16 |
| CGC 8.5 | $12.29£9.29€11.12 | 6 |
| CGC 8 | $12£9.07€10.86 | 6 |
Card facts
- Card number
- 051/102
- Rarity
- Common
- Illustrator
- Mitsuhiro Arita
- Set released
- Jan 9, 1999
- PSA population, all printings
- 1,582
- Printings priced
- 1
Looking for a different one? All 57 Koffing cards we price →
The same card in other sets
EX Deoxys62/107$46.46£35.13€42.04
EX Team Rocket Returns61/109$40.62£30.71€36.75
SM - Cosmic Eclipse243/236$36.42£27.54€32.95
Base Set (Shadowless)051/102$31.84£24.07€28.81
EX Delta Species72/113$30.50£23.06€27.60
Expedition114/165$29.67£22.43€26.85
HeartGold SoulSilver70/123$14.75£11.15€13.35
EX Ruby and Sapphire54/109$14.33£10.83€12.97What moves the price of this card
The Koffing on this page is the Normal printing from Base Set, and it trades at $0.90£0.68€0.81 in near mint condition. Only one printing of this card was produced, so there is no cheaper version to confuse it with.
Graded, it runs PSA 6 $18.99£14.36€17.18, PSA 7 $12.85£9.72€11.63, PSA 8 $23.01£17.40€20.82, PSA 9 $29.20£22.08€26.42, CGC/BGS 9.5 $32£24.19€28.95, PSA 10 $129.99£98.28€117.62. PSA has graded 1,582 copies of it. 1,006 completed sales are on file.
What is a PSA 10 Koffing worth?
A PSA 10 Koffing from Base Set sells for $129.99. 37.8% of the copies PSA has graded came back a 10, so that price is the best case rather than the one a submission should expect.
Is Koffing from Base Set worth grading?
On the numbers, no. The average submission is worth $64.87 with every grade weighted by how often this card comes back at it, against $1.68 for a raw copy plus $99.99 to send it through PSA Regular, so it loses $36.80.
Condition does most of the work below the surface. A copy with soft corners or a print line off centre trades well under the market price shown here, and a copy clean enough to grade trades well above it, which is why the PSA 10 sits at $129.99£98.28€117.62. Before you value your own copy, look at the corners under a light and check the centring on the back, where most cards give themselves away.
What Koffing does
Basic · 50 HP · retreat 1
Foul Gas10Flip a coin. If heads, the Defending Pokémon is now Poisoned; if tails, it is now Confused.
Weak to Psychic ×2. Tournament legal in neither standard nor expanded.