How many movies have Fausto Rossi and Piero Lulli collaborated on?

They have worked on 6 movies together! Their first movie together was Hercules vs. the Giant Warriors (1964) while their highest rated movie together was The Conqueror of Atlantis (1965). They have not worked together since Kitosch, the Man Who Came from the North (1967). They are most known for their adventure films together.