How many movies have Günther Siegmund and Henry Vahl collaborated on?

They have worked on 9 movies together! Their first movie together was Ohnsorg Theater - Wenn man Meyer heißt (1958) while their highest rated movie together was Ohnsorg Theater - Mensch sein muß der Mensch (1970). They have not worked together since Ohnsorg Theater - Der möblierte Herr (1971). They are most known for their comedy films together.