SOUTH AFRICA 1925 'Air' set of 4 to 9d, SG26/9South Africa 1925 'Air' set of 4 to 9d, right marginal blocks of 4, each showing value numeral, SG26 9. A fine and fresh mint set of blocks with large part original gum. The 6d and 9d blocks each include two unmounted mint stamps. The 1d block with marginal re inforcement. Overall, a very fine and most attractive set. A very scarce set in this matching positional form. The Union of South Africa airmail stamps depict de Havilland DH. 9 biplane, a
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