Revealing mistake: When Howard and Curtin chase Dobbs, they pass a dead donkey which is obviously breathing, and the rope used to tie its legs together is visible too.
The Treasure of the Sierra Madre (1948)
1 revealing mistake - chronological order
Directed by: John Huston
Starring: Humphrey Bogart, Walter Huston, Bruce Bennett, Tim Holt
Visible crew/equipment: In the scene When Dobbs is panicking as he searches for the body of his not-so dead partner, who he had tried to kill the night before, he stumbles left and right. The camera pans a bit to far revealing the studio lot, building and fence, and a crew member sitting by a truck or machine.
Gold Hat: We are the Federales... You know... The mounted police.
Dobbs: If you're the police, where are your badges?
Gold Hat: Badges?.. We ain't got no badges. We don't need no badges. I don't have to show you any stinking badges.
Trivia: Director John Huston has a cameo as the white-suited man who gets increasingly irritated when Humphrey Bogart repeatedly begs him for money.