How many movies have Johannes J. Frank and Werner M. Lenz collaborated on?

They have worked on 6 movies together! Their first movie together was Der Glockengießer von Tirol (1956) while their highest rated movie together was Der Adler vom Velsatal (1957). They have not worked together since Gruß und Kuss vom Tegernsee (1957). They are most known for their drama films together.