How many movies have Filippo Perrone and Piera Bruni collaborated on?

They have worked on 4 movies together! Their first movie together was Coffin Full of Dollars (1971) while their highest rated movie together was Adios Compañeros (1971). They have not worked together since A.A.A. Masseuse, Good-Looking, Offers Her Services (1972). They are most known for their western films together.