POSTAGE DUES: 1972 1c green & 8c bright blue (SACC 62&63). Full Set in IMPERFORATE PLATE PROOF BLOCKS OF 24 being the matching top left corner blocks from the unique archival sheets of each value. The blocks extend to include the central marginal arrows at top. Superb UM, spectacular showpiece array for connoisseur being the singularly most important material for this issue. Ex SWA Post Office archives. See additional image below.
