How many movies have Alfred Schlesinger and Gustav Čech acted in together?

They have worked on 4 movies together! Their first movie together was Mlynář a jeho dítě (1929) while their highest rated movie together was Lelíček in the Services of Sherlock Holmes (1932). They have not worked together since Lelíček in the Services of Sherlock Holmes (1932). They are most known for their comedy films together.