How many movies have Hans Heinrich and Ralf Wolter collaborated on?

They have worked on 2 movies together! Their first movie together was Heintje - Einmal wird die Sonne wieder scheinen (1970) while their highest rated movie together was Das Glöcklein unterm Himmelbett (1970). They have not worked together since Das Glöcklein unterm Himmelbett (1970).