How many movies have Otello Sisi and Ruggero Mastroianni collaborated on?

They have worked on 9 movies together! Their first movie together was For Love and Gold (1966) while their highest rated movie together was The Marquis of Grillo (1981). They have not worked together since Bertoldo, Bertoldino, and Cacasenno (1984). They are most known for their comedy films together.