Une gueule en or (1936)

The Marquis de Barfleur, an unattractive man, decides to resort to plastic surgery to ensure the fidelity of Colette, his young mistress. Now endowed with a face to die for, he is about to achieve his goal. But the Marchioness de Barfleur, the Marquis' loving wife, does not hear it that way. She has her revenge claiming everywhere that her husband is... dead! An assertion people believe since they do not recognize the Marquis! When her vengeance has lasted long enough, she forgives the Marquis and husband and wife fall into each other's arms.