How many movies have Bruno Micheli and Ennio Michettoni collaborated on?

They have worked on 6 movies together! Their first movie together was Un ufficiale non si arrende mai nemmeno di fronte all'evidenza, firmato Colonnello Buttiglione (1973) while their highest rated movie together was Beyond the Darkness (1979). They have not worked together since Porno Holocaust (1981). They are most known for their horror films together.