Continuity mistake: When Cash joins Sarah in the carriage, she's holding her suitcase and a kerchief in her lap. She removes the cloth and lets him take the bag. But when the shot cuts to a wider angle, she does this again and he takes the bag from her a second time. (00:34:00)
Continuity mistake: The drawings on the chalk boards in the old schoolhouse keep changing between shots. (00:41:00)
Continuity mistake: Garrison begins destroying the schoolhouse/saloon walls with an axe, knocking over a whiskey bottle on the bar. When he overturns the bookshelf, the bottle has disappeared. (00:42:30)
Continuity mistake: The window Cable is peeking through closes itself between shots. (00:45:00)
Continuity mistake: When Cash uncovers the gold, the bricks change configuration several times between takes. (00:47:15)