How many movies have Gerd E. Schäfer and Maurycy Janowski collaborated on?

They have worked on 3 movies together! Their first movie together was Der Dieb von San Marengo (1963) while their highest rated movie together was No Cheating, Darling (1973). They have not worked together since No Cheating, Darling (1973). They are most known for their comedy films together.