126619 1967 1S 6D GREENISH-BLUE AND DEEP BLUE (SG743) BLOCK OF FOUR IMPERFORATE BETWEEN STAMP AND MARGIN.

1967 1S 6D GREENISH-BLUE AND DEEP BLUE (SG743) BLOCK OF FOUR IMPERFORATE BETWEEN STAMP AND MARGIN. A fine unmounted o.g. top marginal block of four 1967 1s 6d greenish-blue and deep blue variety IMPERFORATE BETWEEN UPPER TWO STAMPS AND SHEET MARGIN. Rare and unusual variety. (Ref 126619).