Philippines 1928 (Nov. 15),  Manila-Hong Kong via British Far East Flight, Cover marked 'By British Army Sea Planes' bearing London-Orient Flight stamps 2c, 4c., 6c., 12c. 16c. L.O.F. 1928 overprint in red  and  1p regular issues, all tied by Manila P.I. cds., first flight special cachet at front,  and arrival cds on reverse.  only 503 carried. AAMC 35.