1943 a pair of covers from Yunnan to Chungking, f.w. domestic express letter label and domestic registered letter label respectively (Chan
1943 a pair of covers from Yunnan to Chungking, f.w. domestic express letter label and domestic registered letter label respectively (Chan SE1, SR1), tied by Chensiung and Lufeng cds. 1943年一對自雲南寄重慶實寄封，分別貼國內快遞及國內掛號信函票（陳目SE1, SR1），銷鎮雄及祿豐日戳。
