The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Opernhaus. Frankfurt a. M
Frankfurt. a. Opernhaus. Postcard
Frankfurt a. M. Opernhaus. M. Jacobs
Frankfurt a. M. Opernhaus
Frankfurt a. M. Opernhaus. G. G. F
Gruss aus Frankfurt a. M. Opernhaus. Postcard. 1909
Frankfurt a. M. Opernhaus. M. Jacobs. 1929
Frankfurt a. Main Opernhaus. Postcard
