拍行描述:
1915, US Postal Agency, 1 C. (2), 2 C., 5 C. (bottom straight edge) 6 C. canc. large oval "U.S. POSTAL AGENCY SHANGHAI, CHINA. R. D." on registered cover w. on reverse "U.S. Postal Agency JUL 9 1915 SHANGHAI, CHINA REGISTERED" via New York to Germany w. "BERLIN 26.8.15" arrival