The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Koln a. Rh. Hohenzollernbrucke. Postcard. 1919
Koln a. Rh. Hohenzollernbrucke. Postcard
Aer Lingus. L1011 50. N191AT. Aviation Postcard. Koln. Germany. Postcard
Koln. No. 5045. Koln mit Hohenzollernbrucke. Karl Rud. Bremer
