This is a nifty, relatively rare GUNJIYUBIN cover sent just 8 months after the conclusion of the Russo-Japan War, from Keijo(a pretty good strike of the CDS), Korea(then occupied by the Japanese), to a fellow soldier in Tokyo, Japan! It was mailed on May 9, 1906, and arrived in Tokyo on 5/12/06(a pretty good receiving CDS)! The brown, 3-Sen, Japanese definitive is in fine condition! The envelope, made of Japanese, WASHI, paper, in quite good condition! The envelope is also quite clean! Noted imperfections aside, this remains a nice piece of Korean and Japanese military postal history!