How many movies have Italo Zingarelli and Umberto Della Monica collaborated on?

They have worked on 3 movies together! Their first movie together was Che femmina!! E... che dollari! (1960) while their highest rated movie together was Divorzio alla siciliana (1963). They have not worked together since Divorzio alla siciliana (1963). They are most known for their comedy films together.