How many movies have Hannelore Auer and Wolf Witzemann collaborated on?

They have worked on 4 movies together! Their first movie together was Das ist die Liebe der Matrosen (1962) while their highest rated movie together was Sing, aber spiel nicht mit mir (1963). They have not worked together since Maskenball bei Scotland Yard (1963). They are most known for their comedy films together.