Koffing is card #70 of 123 in HeartGold & SoulSilver (2010), a Common illustrated by Hajime Kusajima. At about $7.51 it is the #93 most valuable card in the set. In a HeartGold & SoulSilver booster it turns up about once every 7 packs. It is one of 29 Koffing cards printed so far.
1999Base Set
2002Expedition Base Set
2005Deoxys
2009Rising Rivals
2010HeartGold & SoulSilver
2011Call of Legends
2016Evolutions
2021Shining Fates

















See the full HeartGold & SoulSilver card list
An ungraded Koffing from HeartGold & SoulSilver sells for about $7.51. A PSA 10 is worth more, roughly $60.08 by our estimate, and a PSA 9 around $21.03.
It is a Common, and it shows up about once every 7 HeartGold & SoulSilver packs.
Hajime Kusajima drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open HeartGold & SoulSilver booster packs in your browser with the set's real pull rates and keep what you pull in a digital binder. No real cards, nothing to buy.