The Return of Sabata (1972)

The third in a trilogy about the eponymous lone gunman, this one finds Sabata (Lee Van Cleef) working as a sharpshooter for a circus that's just stopped in an ailing one-horse town. The circus gig is only a front, however: Sabata is actually on the verge of robbing town mayor Joe McIntock (Giampiero Albertini). The mayor's been levying heavy taxes as part of a complex plan to defraud the community, but Sabata manages to rip him off first, only to discover that the money is counterfeit.