1894年9月25日镇江寄端士新闻封套, 正面盖方框型邮资已付(PAID)戳, 背面盖黑色镇江双圈日戳, 9月27日蓝色上海工部中转戳, 同日转上海英国客邮局补贴香港女皇像2仙票, 销9月27日上海英国客邮局日戳, 及11月1日Baden的到达戳; 保存完好及罕见, 相信是目前唯一的寄往海外的公务邮件.1992年9月Frederick and Tomiko Barlett; 2008年1月Major Richard Pratt.Chinkiang Officials Covers, Overseas Mail 1894 (25 Sept.) newspaper wrapper to Switzerland bearing a fine strike of the boxed "paid" , fine strikes of Chinkiang despatch c.d.s. in black, Shanghai Local Post (27.9) in blue, with Hong Kong Q.V. 2c. carmine tied by British Post Office Shanghae c.d.s. (27.9) and with Baden arrival (1.11). A fine and rare cover, thought to be the only example of the official mail sent overseas. Photo
