How many movies have Franz Muxeneder and Fred Stillkrauth acted in together?

They have worked on 4 movies together! Their first movie together was Champagner aus dem Knobelbecher (1975) while their highest rated movie together was To the Sparkling Girls' Inn (1979). They have not worked together since Three Lederhosen in St. Tropez (1980). They are most known for their comedy films together.