a Universal picture ; a Jennings Lang production ; a Malpaso Company presentation ; screenplay by John B. Sherry and Grimes Grice ; produced and directed by Donald Siegel
United Artists presents a film produced by Alberto Grimaldi ; screenplay by Age [Agenore Incrocci], Scarpelli [Furio Scarpelli], Luciano Vincenzoni and Sergio Leone ; English version by Mickey Knox ; directed by Sergio Leone