How many movies have Fritz Kampers and Käte Merk acted in together?

They have worked on 3 movies together! Their first movie together was Weltrekord im Seitensprung (1940) while their highest rated movie together was Der laufende Berg (1941). They have not worked together since Übers Jahr, wenn die Kornblumen blühen (1947). They are most known for their drama films together.