Great Britain 1885 10s Ultramarine on blued paper (I.R. Official). SG O9d

Great Britain 1885 10s Ultramarine on blued paper (I.R. Official). Pristine unused original gum block of four lettered BE-CF, overprinted 'SPECIMEN' type 11. An extremely rare multiple of exceptional quality. 1982 British Philatelic Association Certificate SG O9d

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