La Tulipe noire (1964)

Aristocrat Guillaume de Saint Preux leads a double life as a masked bandit known as the Black Tulip. The Black Tulip only robs rich aristocrats, so the local peasants regard him as a hero. Baron La Mouche is convinced Guillaume is the Tulip. During a robbery, he scars the Tulip's face, and hopes to use this to expose Guillaume, but Guillaume is one step ahead.