Air Mail Proof 1934 (May) Air, Death of Darius and Girenas, 20c. essay depicting aeroplane in flight, in grey and blue-green marked "CANCELLED", and the set of six imperforate proofs, four in the issued colours, the 20c. in orange and black, the 3l. in light blue and carmine, all seven stamp-size and with pen cross; the 1l. defective, some of the others thinned. Photo