How many movies have Armas Vallasvuo and Martti Katajisto collaborated on?

They have worked on 15 movies together! Their first movie together was Nuoruus sumussa (1946) while their highest rated movie together was Niskavuoren Heta (1952). They have not worked together since Yks' tavallinen Virtanen (1959). They are most known for their drama films together.