Pokemon 1st Edition Gym Heroes Booster Box Kanto Shark Would you open or keep it sealed? 1st Edition Gym Heroes booster box still factory sealed in an acrylic case. This is a piece of Pokmon history right here. Open Pokemon: Gym Heroes Preconstructed Deck Display Booster Box [1st Edition] Prices Pokemon Gym Heroes Pokemon Cards nothing better than a freshly opened WOTC box! 1st edition Gym Heroes was released in 2000 making this box almost 25 years old! The big hits include Sabrina Gengar, Blaine's Moltres, Rockets