How many movies have Kari Koskela and T.J. Särkkä collaborated on?

They have worked on 4 movies together! Their first movie together was Pekka ja Pätkä mestarimaalareina (1959) while their highest rated movie together was Kankkulan kaivolla (1960). They have not worked together since Jengi (1963). They are most known for their comedy films together.