美国: 1888年10月6日寄北京进口封, 贴5 仙票, 销Logansport 邮戳, 封背盖10月11日三藩市戳, 11月13日紫色㰐圆形上海美国邮政代理日戳. 11月13日上海海关日戳, 及11月16日淡色烟台海关日戳. 封开口有微破. 罕见经烟台转递封. China Postal History Incoming Mail United States: 1888 (6 Oct.) envelope to Peking bearing 5c. cancelled by Logansport postmarks and, on the reverse, San Francisco (11.10), a superb strike of "<H>u.s.postal agency/shanghai" dated oval (13.11), Customs Shanghai (13.11) and a light strike of "<H>customs/chefoo" (16.11) c.d.s.; roughly opened on the reverse. A scarce route via Chefoo. Photo