1925, 5 C, perf 10, and two 10 C, perf 13½, first issue on reverse of cover, tied by URGA MONGOLIA 1/11/25 boxed datestamps on cover to Waikwan, China 20 C tied on front by Waikwan circular datestamp Peking 1/12/15 backstamp, fine and very attractive
6; Übersee A-Z; CHINA; Stempel