How many movies have Alena Penz and Raoul Retzer acted in together?

They have worked on 3 movies together! Their first movie together was The Countess Died of Laughter (1973) while their highest rated movie together was 2069: A Sex Odyssey (1974). They have not worked together since When Girls Trumpet for Manoeuvres (1975). They are most known for their comedy films together.