1893年6月20日寄上海的上海5仙灰色邮资挂号封(E5), 到达时销1月23日深蓝色上海到达日戳, 在背面另有一相同日戳及旁有汉口工部的6月20日调度日戳, 这封虽然注记为挂号及付了2仙邮资及3仙挂号费, 但封上并没有其他的挂号印记, 是这种邮资封的早期使用例, 并同时可能是唯一从汉口所寄出的同类邮资封中的挂号邮件.Hankow Agency of the Shanghai Local Post 1893 (20 June) Shanghai 5c. grey stationery envelope (E5) registered to Shanghai and cancelled on arrival by a fine strike of Shanghai Local Post c.d.s. (23.1) in dark blue, a second strike is on the reverse along with Hankow Local Post despatch c.d.s. in slate-blue. Although marked "Registered" and paying the 2c. postage and 3c. registration, there are no other registration markings. Early use of this envelope and quite possibly the only such registered item from Hankow. Photo