How many movies have Celino Bleiweiß and Martin Trettau collaborated on?

They have worked on 4 movies together! Their first movie together was Die eigene Haut (1974) while their highest rated movie together was Meines Vaters Straßenbahn (1980). They have not worked together since Meines Vaters Straßenbahn (1980). They are most known for their drama films together.