The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Marksburg on Rhine. Hildesheimer. 1919
Marksburg on Rhine. S. Hildesheimer. Series No. 5334
Marksburg on Rhine. S. Hildesheimer. Series. No. 5334
Braubach am Rhein mit der Marksburg. Braubach on the Rhine. Marksburg. F. G. Zeitz
The Rhine. Marksburg Castle. No. 112. Umlauf. Der Rhein. Die Marksburg
Ehrenfels on Rhine. Hildesheimer. No 5334