It's the surprise of a lifetime, when the Pawn Stars give Chumlee a customized Harley-Davidson FXR for his 30th birthday. Will he join them on their trip to the motorcycle rally in Sturgis, or faint from the shock? Then, Rick and the Old Man look at a collection of original blueprints from the U.S.S. Maine. A battleship whose sinking led to the Spanish-American War, do the guys score a direct hit with these rare drawings? Then, Rick is spinning over a wooden 1940s airplane propeller. Hand-carved by master propeller maker Ole Fahlin, will negotiations go sky-high, or never even get off the ground?

Step up to the plate with the Pawn Stars as they check out a Babe Ruth baseball card from when the Bambino was a pitcher with the Boston Red Sox. Will they swing for the fences for this rare card, or will the seller throw them a curveball? Then, Corey eyes an officer's artillery sword from the War of 1812. Will he keep his edge or will the deal be cut short? And later, Corey and Chumlee are offered a keyboard used by the band Three Dog Night. Can this piece of classic rock memorabilia have the guys singing "Joy to the World?"