Auction: 18039 - Fine Stamps and Covers of South East Asia, Including The Dr. Cheah Jin Seng Collections of Straits Settlements and Kedah, and The Iain Dyce collection of Straits Settlements
The R.A.F. Survey Flights
1930 (29 May) envelope flown and registered from Kuching to Sibu and redirected back to Kuching, franked at 32c., showing registration h.s.,
Note: On May 26th 1930 two R.A.F. Southampton flying-boats, S1419 and S1149, flew from their base at Seletar to Kuching. They were to make a detailed survey of the northern coastline of Borneo to locate suitable sites and seaplane bases for later use. On May 30th both planes flew from Kuching to Miri, calling at Sibu on the way. 26 registered and 110 ordinary letters were carried. An airmail fee of 10 cents per ½ ounce was charged in addition to normal postage.