How many movies have Italo Tomassi and Tonino Delli Colli collaborated on?

They have worked on 3 movies together! Their first movie together was The Nun of Monza (1962) while their highest rated movie together was The Decameron (1971). They have not worked together since Salò, or the 120 Days of Sodom (1976). They are most known for their drama films together.