Other mistake: When Kirk Douglas 'appears' to pull a knife from his collar and throw it into Lee Van Cleef's chest, you can see Kirk pick the knife up from a trough in the front edge of the bar. The knife is already in his hand when he reaches to pull the knife from his collar.
Gunfight at the OK Corral (1957)
1 other mistake
Directed by: John Sturges
Starring: Kirk Douglas, Burt Lancaster, Rhonda Fleming, Jo Van Fleet
Genres: Western
Continuity mistake: Doc Holliday with the DOUBLE barrel shotgun shoots three times without reloading.
Dr. John 'Doc' Holliday: I'm a gambler. Money's just a tool of my trade.
Wyatt Earp: Of course, you will guarantee you won't lose.
Dr. John 'Doc' Holliday: I never lose. You see, poker's played by desperate men who cherish money. I don't lose because I have nothing to lose, including my life.