Great Britain King George V "Seahorses" 1915 2s6d Deep yellow brown, SG405.
A superb, perfectly centred unmounted mint full original gum right hand marginal horizontal pair printed by De La Rue.
Very scarce positional piece, particularly so in such pristine condition.
GB Specialised Catalogue Number: N64(5).
Accompanied with a 1976 Royal Philatelic Society (RPS) Certificate of Authenticity.