A Berlin court has ruled that a Jewish poster collector's son living in the US is the rightful owner of a rare poster confiscated by the Nazis. A panel of three administrative court judges says Hans Sachs never lost legal ownership to his poster collection when the Gestapo seized it. Sachs' son, Peter, a 71-year-old resident of Sarasota, Florida, is trying to reclaim 4,000 of his father's posters from the German Historical Museum in Berlin. The posters are worth around $5.8 million. The court's ruling Tuesday applied only to one poster but is expected to be used as a precedent for the return of the entire collection. The German Historical Museum said it would appeal the ruling.