How many movies have Raimondo Van Riel and Ubaldo Arata collaborated on?

They have worked on 5 movies together! Their first movie together was Beatrice Cenci (1926) while their highest rated movie together was Scipio Africanus: The Defeat of Hannibal (1937). They have not worked together since Scipio Africanus: The Defeat of Hannibal (1937).