Une veuve en or (1969)

Une veuve en or (A Golden Widow)is a 1969 film by Michel Audiard with Michele Mercier and Claude Rich in the title roles. 

"Delphine Berger's uncle died and left her a great fortune, the problem is, she can enter upon an inheritance only after the death of her husband... she decides to kill him."

A Golden Widow, a classical black comedy  wasn't commercially successful, but at least you can enjoy Michele's beauty, outfits by Paco Rabanne and gorgeous settings (the movie was shot at Vaux-le-Vicomte). 

 Posters:

 French lobby cards:

  

 

  

 Spanish lobby cards: