How many movies have Aarre Koivisto and Keijo Iiskola collaborated on?

They have worked on 6 movies together! Their first movie together was On lautalla pienoinen kahvila (1952) while their highest rated movie together was Tyttö kuunsillalta (1953). They have not worked together since Pekka ja Pätkä sammakkomiehinä (1957). They are most known for their drama films together.