1881年9月15日德国艾森纳赫(Eisenach)寄上海入口封, 贴德国票20芬尼, 销艾森纳赫日戳, 封背盖9月17日Boulogne日戳, 9月18日那不勒斯日戳, 10月24日香港中转戳, 于10月30日盖上海海关到达戳; 部份收件地址脱了色, 在中国境递送时, 并没有被要求加贴中国邮票. 少见, 保存良好.ChinaPostal HistoryIncoming Mail1881 (15 Sept.) envelope to Shanghai bearing German 20pf. franking tied by Eisenach c.d.s. and, on the reverse, Boulogne (17.9), Naples (18.9), Hong Kong (24.10) and Customs Shanghai (30.10) c.d.s.; part of the address has been bleached out. A good cover which has not required Chinese stamps for delivery. Photo