Lot 760
760
used -- 12a. blue-green pair, variety imperforate between, fine and lightly cancelled; an outstanding example of this great rarity. S.G. O28a, £650. Photo
used -- 12a. blue-green pair, variety imperforate between, fine and lightly cancelled; an outstanding example of this great rarity. S.G. O28a, £650. Photo

Details
used -- 12a. blue-green pair, variety imperforate between, fine and lightly cancelled; an outstanding example of this great rarity. S.G. O28a, £650. Photo