How many movies have Claus Hardt and Robert Siodmak collaborated on?
They have worked on 3 movies together! Their first movie together was Mein Vater, der Schauspieler (1956) while their highest rated movie together was Mein Schulfreund (1960). They have not worked together since Mein Schulfreund (1960). They are most known for their drama films together.
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