1904, 5 Pfg dark green definitive issue 1901, on picture postcard to Bamberg, written in Langfang, a station on Tientsin-Peking railway then the principal base of the German expeditionary corps in China. Langfang had its own postal agency during 1901-1906, but used no datestamps, hence single-circle TIENTSIN 8 2 04 DEUTSCHE POST a cancellation, double-circle arrival BAMBERG 6 MÄR 04, age and use wear typical of period