Blood For A Silver Dollar (1965)

aka's: Un Dollaro Bucato/One Silver Dollar/Le Dollar Troué

Giuliano Gemma plays Gary O'Hara, a confederate soldier who returns from the war to fight one at home. Unknown to Gary, his brother has become the infamous gunfighter “Black Jack” to defeat the local bullies. Gary agrees to ambush and kill Black Jack, only to discover too late who the outlaw really is. Also stars Ida Galli and Pierre Cressoy.