An rare original 1966 US Half sheet poster for the film Duel at Diablo, an American western starring James Garner and Sidney Poitier. The movie was shot on location amidst striking scenery in Utah. 
The stunning artwork is by American artist and realistic painter Frank McCarthy (The Ten Commandments, The Great Escape, Ice Station Zebra). These half sheets are more rare than the larger format US one sheets. They were printed in smaller runs and they stopped producing them in the mid 80's. They have now become a collectors favourite because of their smaller size.