How many movies have Fausto Rossi and Pier Vittorio Marchi collaborated on?

They have worked on 6 movies together! Their first movie together was The Tyrant of Lydia Against the Son of Hercules (1963) while their highest rated movie together was Revolt of the Praetorians (1964). They have not worked together since Women in Cell Block 7 (1973). They are most known for their adventure films together.