Sealed Japanese Pokemon Fossil Booster Pack 1997 291 Rare Holo Guaranteed. Fossil is the name given to the third main expansion of the Pokémon Trading Card Game.
In Japan, it was released as Mystery of the Fossils, the third expansion in the Pokémon Card Game. It is based on Pokémon Red, Blue, and Green, featuring Generation I Pokémon and Fossil Pokémon. The Japanese expansion was released on June 21, 1997.