Shadows on the Sage (1942)

Shadows on the Sage is a 1942 American Western "Three Mesquiteers" B-movie directed by Lester Orlebeck. The Three Mesquiteers, Tucson, Stony, and Lullaby arrive to help Sheriff Lippy fight the outlaws. But when the gang leader Curly Joe captures Tucson and notices the resemblance, he assumes Tucson's identity.