Tonga 1962 2d, 5d, 1s 'Air' Officials, SG O11/13Tonga 1962 (7 Feb) "Emancipation" Air Officials, 2d ultramarine, 5d violet, 1s red brown, type O3 overprint, in right marginal blocks of 4, the 2d and 1s both from R5 6 4 5 of the 5x6 setting, with the 1s lower right corner, with plate number "1A" and part red "overprint imprint", the 5d from R3 4 4 5, SGO11 13. A fine and fresh unmounted set of blocks of four with full original gum. Each block includes constant printing variety "Short lower bar to L