McHale's Navy (1962)

Season 1: Episode 33

The 73 Crew investigates the crash site of a Japanese transport plane, which is loaded with 4 million dollars' worth of American currency. McHale convinces the boys that the bills are counterfeit, and, later, Gruber trades the supposedly phony money to Urulu, for some island trinkets. But when they find out that the money is real, McHale and The Crew must scheme to get it back.