Tonga 1962 1s "Emancipation" blue and black error, SG125aTonga 1962 (7 Feb) "Emancipation" 1s blue and black, type 59 overprint, ERROR OVERPRINT INVERTED, SG125a. A very fine unmounted mint example of this great rarity with full original gum. A major British Commonwealth rarity in unused condition, being the finer of just TWO examples recorded, with the remainder of the half sheet of 30 issued at Vavau being used on first day covers. The overprinted stamps were issued in celebration of the Centenary of