Air Mail cover 1932-39 envelopes carried on various first or special flights including 1932 (May) 2nd Madrid-Manila flight, 1936 (Feb.) R.A.F. flight to Shanghai, (Mar.) Imperial Airways to London (3, one addressed to Penang), (July) "Delphinius" to India and later flights to China and others. (16)

Details
Air Mail cover 1932-39 envelopes carried on various first or special flights including 1932 (May) 2nd Madrid-Manila flight, 1936 (Feb.) R.A.F. flight to Shanghai, (Mar.) Imperial Airways to London (3, one addressed to Penang), (July) "Delphinius" to India and later flights to China and others. (16)