How many movies have Frits van Wenkop and Toon van Loon acted in together?

They have worked on 7 movies together! Their first movie together was De avonturen van Pietje Bell (1964) while their highest rated movie together was Een Nederlandse Robinson Crusoe (1969). They have not worked together since De Robins en Het Robot Komplot (1972). They are most known for their family films together.