Somaliland Protectorate 1904-05 8a grey-black and pale blue Official, overprint 'SPECIMEN', variety 'No stop after 'M', SGO13as.
A fine mint example with original gum.
A key rarity as only a maximum of 6 possible.
Accompanied with certificates of authenticity from the British Philatelic Association (2012) and Royal Philatelic Society (1985).
