From the original 1999–2000 Pokémon TCG Base Set (#51/102), this Koffing card offers classic first-generation appeal. Mitsuhiro Arita’s artwork shows Koffing floating with a mischievous grin amid swirling yellow-green toxic clouds, capturing the vintage style of the early cards. As a Basic Poison Gas Pokémon with 50 HP and a single attack (Foul Gas), it deals 10 damage and can poison or confuse the opponent—true to its toxic theme. The non-holo Base Set printing adds vintage collector appeal, making this one of the earliest English trading-card appearances of Koffing.