Korea. (Japanese Post Offices In Korea). 1910. Envelope addressed to France bearing Japan SG 134, 1s brown SG 136, 1 1/2s violet (pair) and SG 139, 3s rosine (pair) tied by Seoul/ Korea date stamp '22nd April 1910' , endorsed 'via Siberia', routed via Manchuria with Changchun transit and Cannnes arrival '15th May 10' on reverse. Lovely three colour franking.