莫斯科--柏林航空服务: 1927年8月2日上海寄英国挂号封, 贴邮资八十六分, 销上海双语日戳, 封背有8月8日哈尔滨及82月0日柏林中转戳; 信封有摺痕. 品相中上.China Covers and Cancellations Air MailInternational Moscow - Berlin Air Service: 1927 (2 Aug.) long envelope registered to England "via Siberia" bearing 86c. franking tied Shanghai English/Chinese c.d.s. with Shanghai red on white registration label and, on the reverse, Harbin (8.8) and Berlin (20.8) transit c.d.s.; central vertical folding crease and some soiling. Pays 16c. double weight postage, 10c. registration and 60c. for double weight air mail. Photo
