How many movies have Helmut Käutner and Herbert Weißbach collaborated on?

They have worked on 8 movies together! Their first movie together was Romance in a Minor Key (1943) while their highest rated movie together was Christoph Kolumbus oder Die Entdeckung Amerikas (1969). They have not worked together since Die preußische Heirat (1974). They are most known for their drama films together.