How many movies have Rudolf Schündler and Ruth Stephan acted in together?

They have worked on 13 movies together! Their first movie together was Die Unschuld vom Lande (1957) while their highest rated movie together was Was ist denn bloß mit Willi los? (1970). They have not worked together since Die Kompanie der Knallköppe (1971). They are most known for their comedy films together.