How many movies have Hans Quest and Rolf A. Wilhelm collaborated on?

They have worked on 5 movies together! Their first movie together was Tante Frieda - Neue Lausbubengeschichten (1965) while their highest rated movie together was Onkel Filser - Allerneueste Lausbubengeschichten (1966). They have not worked together since The Serpent's Egg (1977). They are most known for their comedy films together.