1894 Chinkiang (15 Aug) to Baron Gabriel de Gunzburg, Shanghai, f.w. Chinkiang LPO 1st issue 6c, tied by Chinkiang Postal Service cds,
1894 Chinkiang (15 Aug) to Baron Gabriel de Gunzburg, Shanghai, f.w. Chinkiang LPO 1st issue 6c, tied by Chinkiang Postal Service cds, alongside with framed "REGISTERED" mark. Arrived Shanghai LPO (16 Aug). One of the two types of registered marks used by Chinkiang LPO.1894.8.15 鎮江寄上海Baron Gabriel de Gunzburg,貼鎮江書信館第一版6分,銷鎮江郵政服務日戳,旁鈐“REGISTERED”帶框橫戳。8.16抵上海工部郵局。為鎮江書信館兩款掛號章之一。