The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Koln Rhein. Cathedral and Gross St. Martin. Ziethen. Horst Ziethen. Multi View
Koln. Rhein. Cathedral and Gross St. Martin. Ziethen. Horst Ziethen. Multi View
Koln am Rhein. The Cathedral of Cologne. Hans Ziethen
Koln am Rhein. The Cathedral of Cologne. Horst Ziethen
Koln am Rhein. The Cathedral of Cologne. Southern Side. Hans Ziethen. Horst Ziethen
Koln am Rhein. The Cathedral of Cologne. Southern Side. Hans Ziethen
Koln am Rhein. The Cathedral of Cologne. Wilhelm Schafer. Kruger