# Koffing #70/123 — HeartGold SoulSilver

## Summary

Koffing is a bulk common from the first HeartGold SoulSilver set, the sort of pull that fills a binder slot and rarely a wishlist. Hajime Kusajima is a longtime Pokémon TCG illustrator, and a cheerfully smoggy Gen I Poison type keeps a small circle of completionists interested. A $0.58 modelled guide, up 6% over 30 days on 8 copies traded, says bulk, with 45 days of inventory on the board, and the economics stop there: no PSA population is on file, and the same card plays for $0.19 out of Journey Together.

## Identity

| Field | Value |
| --- | --- |
| Set | HeartGold SoulSilver |
| Number | 70/123 |
| Rarity | Common |
| Era | HGSS |
| Illustrator | Hajime Kusajima |
| Release date | 2010-02-10 |
| Image | Unavailable |

## Card details

| Field | Value |
| --- | --- |
| Card type | POKEMON |
| Stage | Basic |
| HP | 50 |
| Types | Psychic |
| Attack: Smokescreen | cost Colorless — damage 10 — If the Defending Pokémon tries to attack during your opponent's next turn, your opponent flips a coin. If tails, that attack does nothing. |
| Attack: Suffocating Gas | cost Colorless/Colorless — damage 20 |
| Weakness | Psychic ×2 |
| Retreat | 1 |
| Legal | Standard no · Expanded no |
| Pokédex entry | [Koffing #109](https://cardboardalpha.com/pokemon/pokedex/koffing) |
| Finishes | Normal, Reverse Holo |
| Languages | EN |

## Current stats

- Headline price: **$0.58** (ITEM_MEDIAN; modelled guide price) — as of 2026-10-27T23:34:37.642Z
- Headline basis: MODELLED_GUIDE — The venue’s published daily market guide, which the venue itself declares MODELLED. Nothing is confirmed to have traded at it, no copy is listed at it, and it is not our estimate — it is theirs.
- 24h change: n/a · 7d change: n/a — as of 2026-10-27T23:34:37.642Z
- Floor delivered ask: $2.07 — as of 2026-10-16T21:41:43.326Z
- Quant score: 45/100, regime ILLIQUID_UNKNOWN — as of 2026-10-27T23:34:37.642Z — 5 of 11 inputs · 55% weight · -22% confidence

## Provenance

- Catalog — observed 2010-02-10T00:00:00Z, confidence 98%
- Live ask — observed 2026-10-16T23:55:08.560Z, confidence 90%
- Guide price (modelled) — observed 2026-10-27T00:00:00.000Z, confidence 90%
- Price statistic — observed 2026-10-16T23:55:05.956Z, confidence 90%
- Confirmed sale — observed 2026-10-16T01:45:56.573Z, confidence 85%
- Inventory count — observed 2026-10-16T23:55:05.956Z, confidence 70%

## Links

- [View on Cardboard Alpha](https://cardboardalpha.com/pokemon/heartgold-soulsilver/koffing-70)
- [JSON snapshot](https://cardboardalpha.com/api/terminal/raw~tcgdex%3Ahgss1-70%3AEN%3ANORMAL~NM)