Koffing
# Koffing - Delta Species Koffing from Delta Species represents a curious moment in Pokémon TCG history when the game experimented with type-shifting mechanics. This card interests collectors primarily because Delta Species introduced the concept of Pokémon existing outside their traditional typings, making Koffing a collectible footnote in that mechanical exploration. Most collectors pursue this card for set completion rather than standalone appeal. The reverse holofoil variant tends to draw slightly more attention than the standard version, though neither commands particular collector enthusiasm. Its value lies mainly in historical context—marking when the TCG tried to shake up established type conventions—rather than in the card's individual strength or rarity.