1928-41 first flight covers (7) incl. 1931 Francis Chichester flight Manila - Tokio crashed at Katsuura with cachet & pilot signed, 1931 U.S Army flight Stotsenburg - Ilagan, cachet & pilot signed (2nd Lieut Taylor) 41 items flown, 1935 R.A.F Flying Boat Survey flight Manila - Singapore with cachet, another Manila - Hong Kong, another Manila - Amoy, 1941 P.A.A Manila - Singapore scarce circular cachet (50 flown). (Image)