How many movies have Eduard Eysenck and Guido Herzfeld acted in together?

They have worked on 1 movie together! Their first movie together was Der Weg, der zur Verdammnis führt, 2. Teil - Hyänen der Lust (1919) and was their highest rated movie together. They have not worked together since Der Weg, der zur Verdammnis führt, 2. Teil - Hyänen der Lust (1919).