The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Absender. Posthausschild Norddeutsche Bundespost. 1868. Bundespostmuseum Frankfurt am Main. E. Muller. 1987
Absender. Postcard
Absender. Hamburg. Postcard. 1981
Absender. Hamburg. S. Y. Sea Cloud of Grand Cayman. Postcard. 1980
Absender. Postcard. 1990
Der Absender Dieser Karte Unterstutzt die Arbeit Von Pro Juventute. Reinhard Meyer