How many movies have Fred Bertelmann and Walter Gross acted in together?

They have worked on 3 movies together! Their first movie together was Gitarren klingen leise durch die Nacht (1960) while their highest rated movie together was Meine Nichte tut das nicht (1960). They have not worked together since So liebt und küsst man in Tirol (1961). They are most known for their romance films together.