How many movies have Helga Schlack and Kurt Nachmann collaborated on?

They have worked on 3 movies together! Their first movie together was Zwölf Mädchen und ein Mann (1959) while their highest rated movie together was Jerry Cotton: The Trap Snaps Shut at Midnight (1966). They have not worked together since Jerry Cotton: The Trap Snaps Shut at Midnight (1966). They are most known for their comedy films together.