1931 (30 May) Inauguration of international airmail serivce FFC from Shanghai to England, f.w. Junk and airmail issue x16 on reverse, tied
1931 (30 May) Inauguration of international airmail serivce FFC from Shanghai to England, f.w. Junk and airmail issue x16 on reverse, tied by commemorative cds. Arrived London (12 Jun). 1931.5.30 國際航空郵運創辦首航封，自上海寄英國，背貼帆船及航空票共16枚，銷紀念日戳。6.12抵倫敦。
