cover South West Africa, 1931, 3p Blue & Dark Brown, 10p Brown Violet & Black Air Post (C5-C6, Gibbons 86-87), four covers, one bearing B. imprint block of four of no. C5 tied on First Flight cover to England; one bearing pair of 3p and single 10p (Afrikaans) tied on cover from Windhoek-Kimberley to England; one bearing pair of each stamp tied on cover to Kimberley with ms. 'Kimberley Special Air Flight'; one bearing pair of 10p on cover to England, all appear fine-very fineest.