South Africa Natal 1887-89 2d olive-green SPECIMEN, SG106sSouth Africa Natal 1887 89 2d olive green, die I, overprint 'SPECIMEN', SG106s. A brilliant mint example with large part original gum and with lovely colour. A few slightly shortish perforations, which do not detract from overall quality. A scarce specimen stamp in such fine condition. "SPECIMEN" examples were used solely by postal administrations for reference purposes to help spot any attempted forgeries. The Stanley Gibbons catalogue value is 100.