How many movies have Käthe Braun and Rolf A. Wilhelm collaborated on?

They have worked on 4 movies together! Their first movie together was Lausbubengeschichten (1964) while their highest rated movie together was Onkel Filser - Allerneueste Lausbubengeschichten (1966). They have not worked together since Ludwig on the Lookout for a Wife (1969). They are most known for their comedy films together.