How many movies have Arzén von Cserépy and Bobby E. Lüthge collaborated on?

They have worked on 6 movies together! Their first movie together was Das Mädchen aus der Ackerstraße. 1. Teil (1920) and was their highest rated movie together. They have not worked together since Fridericus Rex - 3. Teil: Sanssouci (1923). They are most known for their drama films together.