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it is a genuine unused, o.g., hinged, (Positions 2,4,5 and 6 never hinged) top margin Plate No. F 19000 block of six, with Post Office blue crayon lines in the top left selvage and small thins in Positions 1 and 3.
it is genuine used, with a partially removed pen cancel, faded color, a corner crease at the top right, a 1/2 mm tear at the upper right and three short perfs.