How many movies have Alfio Quattrini and Stelvio Cipriani collaborated on?

They have worked on 3 movies together! Their first movie together was The Return of Halleluja (1972) while their highest rated movie together was Incensurato, provata disonestà, carriera assicurata cercasi (1972). They have not worked together since Nightmare City (1980). They are most known for their comedy films together.