How many movies have Aarre Koivisto and Sirpa Särömaa collaborated on?

They have worked on 3 movies together! Their first movie together was Vatsa sisään, rinta ulos! (1959) while their highest rated movie together was Pekka ja Pätkä neekereinä (1960). They have not worked together since Pekka ja Pätkä neekereinä (1960). They are most known for their comedy films together.