How many movies have Fernand Wicheler and Jean-François Fonson collaborated on?

They have worked on 4 movies together! Their first movie together was The Marriage of Mademoiselle Beulemans (1927) while their highest rated movie together was Le mariage de Mademoiselle Beulemans (1967). They have not worked together since Le mariage de Mlle Beulemans (1978). They are most known for their comedy films together.