How many movies have Frithjof Vierock and Robert Naegele acted in together?

They have worked on 3 movies together! Their first movie together was Der Heiratsschwindler heiratet (1966) while their highest rated movie together was Honeybun - or How Do I Tell My Daughter? (1969). They have not worked together since Honeybun - or How Do I Tell My Daughter? (1969). They are most known for their comedy films together.