Have You Seen A Sealed Box Of This Before? The Pokmon Gym 2 booster box refers to the Japanese Gym Challenge expansion. It is a highly sought after vintage set featuring Gym Leaders Is this BreakThrough booster pack fake? : r IsMyPokemonCardFake Pokemon EMPTY 1st Edition Gym Heroes and Gym Challenge Booster Boxes 2 Box Lot (No packs, no cards) POKEMON GYM CHALLENGE UNLIMITED BOOSTER BOX WOTC TCG ENGLISH SEALED U.S. eBay EMPTY GYM CHALLENGE UNLIMTED WOTC Booster Box (NO POKEMON CARDS) eBay Gym Challenge Unlimited Booster Pack Baker Breaks