How many movies have Katharina Mayberg and Wolfgang Liebeneiner collaborated on?

They have worked on 3 movies together! Their first movie together was Der blaue Stern des Südens (1952) while their highest rated movie together was Die schöne Müllerin (1954). They have not worked together since Ich heirate Herrn Direktor (1960). They are most known for their comedy films together.