DALLAS – Beginning June 1, Heritage Auctions is launching a special auction for packs from a coveted 1999 Pokemon Unlimited Base Set Booster Box, which will be opened during a live event at 1 pm Central time on June 27. The box break of the fresh-to-market sealed card packs will take place and be streamed live during the highly anticipated collectors’ convention known as Collect-A-Con, an event dedicated to trading cards, pop culture collectibles, and comics.