The Three Stooges - 005 - Horses' Collars (1935)

The Stooges are detectives in the Old West. They have been sent out to recover an IOU from Double Deal Decker (Fred Kohler), a ruthless killer who plans to take possession of a ranch that is rightfully owned by Nell (Dorothy Kent). After an unsuccessful attempt at a saloon, the Stooges head to Decker's hideout, where they find the IOU in a safe, and Curly manages to defeat the killers