How many movies have Gerrie van Wyk and Louis de Witt collaborated on?

They have worked on 5 movies together! Their first movie together was Danie Bosman: The Story of the Greatest South African composer (1969) while their highest rated movie together was 'n Beeld vir Jeannie (1976). They have not worked together since 'n Beeld vir Jeannie (1976).