How many movies have Eduard von Winterstein and Viktoria von Ballasko acted in together?

They have worked on 3 movies together! Their first movie together was Heiratsschwindler (1938) while their highest rated movie together was Robert Koch, der Bekämpfer des Todes (1939). They have not worked together since Und wieder 48 (1948). They are most known for their drama films together.