2 insanely rare Pokmon Base Set Booster boxes!!!, ., ., ., ., #pokmoncards #charizard #pikachu #pokemoncardcollection #pokemoncard #pokemon 1999 Base Set Black Triangle Error Booster Pack Set PSA 10 The very first expansion to be released for the Pokmon TCG was Base Set (Expansion Pack in Japan), and in front PSA 10 GM MINT 1999 POKEMON BASE SET BOOSTER BLACK TRIANGLE ERROR PACK CHARIZARD 1999 POKEMON BASE SET BLACK TRIANGLE ERROR VENUSAUR BOOSTER PACK PSA 10