How many movies have Carl Blumenberg and Charles Vanel collaborated on?

They have worked on 1 movie together! Their first movie together was Drei Tage auf Leben und Tod - aus dem Logbuch der U.C.1 (1929) and was their highest rated movie together. They have not worked together since Drei Tage auf Leben und Tod - aus dem Logbuch der U.C.1 (1929).