Cyprus 1964 Olympic Games 10m brown, black and yellow variety, SG246/aCyprus 1964 Olympic Games 10m brown, black and yellow, lower left corner block of 9 (3x3), with watermark inverted, R9 2 showing 'Blind runner' printing flaw, SG246 a. A pristine unmounted mint marginal block with full original gum. The printing flaw occurred only once in a printer's sheet of 400 (divided into four post office sheets of 100) and was quickly discovered, with many examples being officially removed. A rare and attractive positional