How many movies have Amedeo Sollazzo and Umberto D'Orsi collaborated on?

They have worked on 12 movies together! Their first movie together was Veneri al sole (1964) while their highest rated movie together was Franco, Ciccio e il pirata Barbanera (1969). They have not worked together since Two Cat O'Nine Tails… and a Half, in Amsterdam (1972). They are most known for their comedy films together.