The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Speyer am Rhein. Dom. Postcard
Speyer a. Rhein. Der Dom. Postcard
Koln a. Rh. Dom. Postcard
Munchen. Rathaus u. Frauenkirche. Dom. Postcard
Berlin. Dom. Postcard. 1905
Coln a. Rh. Dom. Postcard
Berlin. Dom. Postcard. 1912