cover 1881 (6 Mar.) XU5 with "CUSTOM HOUSE/KIUKIANG" printed on flap to Massachasetts via Shanghai, Yokhama and San Francisco showing on reverse "CUSTOMS" double ring d.s. of "KIUKIANG" (blue) and "SHANGHAI" bearing on front "Koban" perf. 9-10 5s. brown pair (gum stained) cancelled by cork h.s. and showing "I.J. POSTAL AGENCY/SHANGHAI" double ring d.s. adjacent. Photo