Cyprus 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 multiple.
