When a seller comes in with a poster by Henri de Toulouse-Lautrec, will it make an impression on Rick, or will he bid adieu? Meanwhile, Chum unboxes some 1912 Yale baseball uniforms. Is it a home run, or a strike out? Then, Rick takes a look at a ukulele from 1919. Is this deal music to his ears, or is the seller just stringing him along? And later, Chum, Rick and Jake head to the track to test out a restored Track Rabbit go-kart. Will it run smoothly, or be a bumpy ride?

When a customer walks in with a "Tommy Boy" poster signed by Chris Farley, will it have Corey saying holy schnikes, or does it belong in a van down by the river? Meanwhile, Rick tries not to slip up when making a deal on a pair of snowshoes used in World War II. Then, Rick and Corey get a blast from the past when they go see a hand cannon from the 1600s. Can they hit their target, or will it blow up in their faces? And later, Chum analyzes a block of graphite used in the Chicago Pile-1 nuclear experiment. Will this chain reaction be a good one, or will it result in a meltdown?