How many movies have Gerd Ehlers and Hanns Anselm Perten acted in together?

They have worked on 3 movies together! Their first movie together was What Would Happen If...? (1960) while their highest rated movie together was Jetzt und in der Stunde meines Todes (1963). They have not worked together since When You’re Grown Up, Dear Adam (1966). They are most known for their comedy films together.