Minnesota Clay (1965)

Wrongfully imprisoned for a crime he didn't commit, Minnesota Clay seeks revenge on the man who withheld evidence at his trial. There is a problem however, he is going blind. (imdb)
Genre: Western
Directed By: Sergio Corbucci
Written By: Sergio Corbucci, Adriano Bolzoni
Starring: Cameron Mitchell, Antonio Casas, Fernando Sancho, José Canalejas, Alberto Cevenini, Georges Rivière