Flying Boats, 1931, Jun 18
SANA flying boat, F/F Malta to Tripoli, bs 18/6, franked 2 1/2d canc violet 'Air Mail/Malta' cds, violet "1st Air Mail" cachet. Only short notice of this flight was given, so only small numbers were flown.
Flying Boats, 1935, Mar 11
Netherlands/Royal Naval Air Force survey flight, Manila to Sourabaya (Java), bs 15/3, Hong Kong Bank (embossed on flap) cover franked 16c, large purple boxed 'Air Mail' hs and fine strike violet framed "Via Flying Boats/Netherlands/Royal Naval Air Force" cache verso.
Flying Boats, 1936, Feb 16
RAF Flying Boat, Manila to Hong Kong, bs 16/2, cover franked 16c, fine strike black framed cachet, b/s, airmail cover. Image.
Flying Boats, 1939, May 26
F/F FAM 18 Southern North Atlantic route, Horta-New York, bs 27/5, blue cachet, b/s, uncommon cream/grey black souvenir cover with attractive picture of flying boat in flight, Pan Am.