How many movies have Marie Luise Lusewitz and Wolfgang von Schiber collaborated on?

They have worked on 4 movies together! Their first movie together was She's 19 and Ready (1979) while their highest rated movie together was Wild and Beautiful on Ibiza (1980). They have not worked together since Ein Kaktus ist kein Lutschbonbon (1981). They are most known for their comedy films together.