RHODESIA 1973 (VARIETY) 3C IMO/WMO CENTENARY PLATE BLOCK WITH BLACK DOUBLE
3c IMO/WMO Centenary traffic light/plate 1A–1A–1A–1A block x 4 with variety black printed double. Near coincident, but visible without magnification as a thickening of country name and star. Black plate 1A clearly doubled under magnification. The key positional piece. Fresh and fine. Mint never hinged. SG481var; SC321var; SACC243var
