How many movies have Dino Maiuri and Mario Lupi collaborated on?

They have worked on 6 movies together! Their first movie together was The Case Is Closed, Forget It (1971) while their highest rated movie together was Corleone (1978). They have not worked together since Corleone (1978). They are most known for their crime films together.

Crew
Story
Crew
Administration
Crew
Screenplay