How many movies have Gunter Otto and Jean Droze collaborated on?

They have worked on 7 movies together! Their first movie together was Die Stoßburg (1974) while their highest rated movie together was Liebesgrüße aus der Lederhose 3: Sex-Express in Oberbayern (1977). They have not worked together since Kokosnüsse und Bananen (1989). They are most known for their comedy films together.