The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Volendam. Dr. Trenkler
Volendam. Dr. Trenkler. D. T. C. Ser. 158. 6
Costume Volendam. Dr. Trenkler. Series 1002. 2
Kastell Saalbvrg. Horrevm. Porta Decvmana. Ovaestorivm. Trenkler. 1909
Coln a. Rh. Frankenwerft. Dr. Trenkler. 1909
Andermatt Strasse. Dr. Trenkler. 1909
Die Salzach aus der Vogelschau. Trenkler. 1909
