How many movies have Rosa Valetti and Willi A. Herrmann collaborated on?

They have worked on 1 movie together! Their first movie together was Verlorene Töchter 3. Teil - Die Menschen nennen es Liebe (1919) and was their highest rated movie together. They have not worked together since Verlorene Töchter 3. Teil - Die Menschen nennen es Liebe (1919).