How many movies have Hans Behrendt and Otto Gebühr collaborated on?

They have worked on 7 movies together! Their first movie together was Fridericus Rex - 1. Teil: Sturm und Drang (1922) while their highest rated movie together was Barbarina, the King's Dancer (1932). They have not worked together since Barbarina, the King's Dancer (1932). They are most known for their drama films together.