Put up your dukes with the Pawn Stars as the guys check out a postcard signed by legendary boxer Jack Johnson. The first African American to become heavyweight champ, will the card knock Rick out? Then, Corey and Chum set their negotiating skills on stun when some props from the original Star Trek series beam into the shop. Will the price go where no deal has gone before? And later, when Chum decides he needs his own desk, can he convince the guys he's worthy? (thetvdb.com)