Hindenburg series with mourning border - 6 stamps, catalog no. 548-53, mint never hinged, German Empire | mint | German Empire | Germany | Postage stamps | Stamps Sieger
File:DR 1934 513 Paul von Hindenburg.jpg - Wikimedia Commons
1 Pfennig Deutsches Reich in Briefmarken aus Dem Deutschen Reich (1933-1945) online kaufen | eBay
1 pfennig hi-res stock photography and images - Alamy