This is a nifty, rare piece of Japanese and German military postal history! This color, commemorative(obtained in Japan & celebrating the Emperor Taisho's official coronation; in pristine condition) post card was sent to a German prisoner of war interned in Osaka, Japan, some time in 1918(well after the stamp was actually cancelled, but seemingly accepted by the Japanese Post Office). The 1.5-Sen Japanese commemorative(celebrating the coronation of Emperor Taisho) issue is in very fine condition! The stamp was actually pre-cancelled with special, purple, commemorative cancels(celebrating the Emperor Taisho's coronation!) at the Senba(in Osaka) P.O. on November 14, 1915! The card was sent to a Herrn. A. Strassburg, Osaka, (Japan) Kriegsgefangenlager(German for P.O.W. camp!)! The sender was also German, most likely a German P.O.W., named G. Dalles. From what I could figure out from his message, he seemed to be saying something along the lines of: "This is a memento of the time spent in Japan as P.O.W.s. during the World War, 1914-1918." From past, online research, I found that the Japanese P.O.W. camp authorities had actually given some of the same commemorative stamps and post cards to German and Austro-Hungarian P.O.W.s, and encouraged/pressured them to use them. While relations between the Japanese and the P.O.W.s were usually quite cordial, some of the P.O.W.s actually physically resisted showing any kind of respect to the Taisho Emperor when asked to do so! Simply put, this is a neat, unique piece of Japanese and German military postal history!!