The Nazi art dispute case is a 12 year old dispute over the Guelph Treasure in the US Supreme Court. Guelph Treasure is a collection of 42 pieces of medieval ecclesiastical art or church art from the time period between 11th to 15th centuries. It includes altars and crosses. The collection is currently being displayed at the Bode Museum in Berlin. The plaintiffs in the case argue that the Nazis had forced their Jewish ancestors to sell the rare art collection.