How many movies have Benno Mieth and Günter Mehnert collaborated on?

They have worked on 3 movies together! Their first movie together was Geheimnis der 17 (1963) while their highest rated movie together was … verdammt, ich bin erwachsen (1974). They have not worked together since … verdammt, ich bin erwachsen (1974). They are most known for their drama films together.