Official. 1937-44 1/2d grey and blue-green type O5 opt (reading up and down OFFICIAL at left) right marginal block of 4 with 7980 sheet number o.g. (lower pair unmounted. Scarce multiple. Purchased from Stanley Gibbons (still on their card)
SOUTH AFRICA SGO32 Official 1937 1/2d type O5 opt up and down OFFICIAL at left
Sale!£57.50
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