Other mistake: In the final gunfight when Joe shoots the gun from Ramon's hands and kills the rest of his gang, he fires six shots. He then shoots the rope that Silvanito has been tied up to without reloading. His gun is a revolver, which only holds six bullets, yet Joe fires seven times.
A Fistful of Dollars (1964)
1 other mistake
Directed by: Sergio Leone
Starring: Clint Eastwood, Gian Maria Volonte, Marianne Koch, Wolfgang Lukschy
Factual error: When the "U.S." soldiers open fire on the Mexican cavalry, they employ a machine gun. The only two rapid-firing weapons in that time period were the Gatling gun, which used a magazine or drum of rounds and was fired by turning a crank, or the "Mitrailleuse" volley gun, which required at least two men to operate it, one to load the ammunition blocks, and the other to turn, once again, a crank to fire the weapon. The gun pictured has a single operator and neither a crank, nor any visible cartridge feed.
Trivia: The boots Clint Eastwood wears in this film are the same ones he wore in "Rawhide".
More questions & answers from A Fistful of Dollars
Answer: The look in Ramon's eyes.