Continuity mistake: When Lee Marvin hits Clint Eastwood and interrogates him about riding the same horse with Elizabeth, Marvin's chin strap alternates begins the scene tucked tightly under his chin, then is resting against the front of his face, then tucked under his chin again, yet he never touches it with his hands.
Suggested correction: The times this happens it snaps to Eastwood, who is to say he doesn't adjust then.
No, when the chin strap changes, even though the camera cuts to Eastwood, Marvin is still in frame and we see his arms down. He never moves his hands up to adjust it.