A Man, a Horse, a Gun
The Stranger happens across a murdered postal inspector and a gang of bandits set on a prize of stolen gold which should be transported in a stagecoach. The Stranger, a sharpshooter named En plein and a treacherous postal agent try to get their hands on the gold. Source: SWDB www.spaghetti-western.net
Starring
Watch "A Man, a Horse, a Gun" on Amazon released in 1967. It's a western movie, and has a rating of 6.3 out of 10 from Imdb which is usually fine for this kind of movie, and is currently only available for purchase or rent.