Proof Block of Four 1d. brown, 6d. blue and 1/- green blocks of four, and 1/- grey-black block of six (3 x 2), all marginal or from the corner of the sheet; fine. Photo

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Proof Block of Four 1d. brown, 6d. blue and 1/- green blocks of four, and 1/- grey-black block of six (3 x 2), all marginal or from the corner of the sheet; fine. Photo