1941 OCBC Hupi (receipt of remittance) from Nanhoi (19 Apr) to Penang, applied with Namhoi origin cds. F.w. SYS 25c in strip of 3, tied by
1941 OCBC Hupi (receipt of remittance) from Nanhoi (19 Apr) to Penang, applied with Namhoi origin cds. F.w. SYS 25c in strip of 3, tied by Canton (20 Apr) cds. Showing "Airmail" mark and censor mark. Air route between Namyang and Hong Kong was available between 29 Aug 1940 and 16 Dec 1941. Scarce airmail Huipi with censor mark.1941.4.19 華僑銀行回批，自南海寄檳城，鈐南海三格漢英日戳。貼孫像2角5分三連，銷廣州4.20日戳。鈐航空章及“南僑D”檢查章。南雄-香港航線於1940年8月29日至1941年12月16日運作。難得之郵政匯款航空回批，帶檢查章亦是少見。
