How many movies have Erna Haffner and Uschi Stiegelmaier acted in together?

They have worked on 3 movies together! Their first movie together was Bockbier-Sex (1974) while their highest rated movie together was Ob Dirndl oder Lederhose - gejodelt wird ganz wild drauflos (1974). They have not worked together since Golden Century of Porn 6 (2012).