Air Mail essay Proof 1961 Air, United Nations Commemoration, handpainted essays for the set of eight and the miniature sheet in designs similar to those issued, mounted on presentation card (202x259mm.); two sets of imperforate proofs on similar card, one marked on reverse that the 10c., 10col. and miniature sheet are to be amended, and a further card with amended proofs of these three. A unique group.