This is a “gedeckter güterwagen der reichsbahn” or a covered / roofed freight car of the Reichsbahn, the German Railways. These types of freight cars were produced from 1910 and used up til 1960 by the German Railways. During the war these freight cars got their infamous reputation by transporting “unwanted” to the concentration and death camps. Photographed in the Deutsches Technikmuseum Berlin in 2016.
