Great Britain 1919 2s6d Olive-brown "Seahorses", SG413a var.
Superb unused original gum, well centred example printed by Bradbury Wilkinson overprinted "SPECIMEN" type 32.
Very rare believed to originate from the printer's day book with only two examples recorded.
Accompanied with a British Philatelic Association (BPA) certificate of authenticity.
GB Specialised Catalogue No: N65(1)var.
