Great Britain 1913 £1 dull blue-green "Seahorses", SG404var.
A superb perfectly centred unmounted mint, with full original gum, example printed by Waterlow overprinted "CANCELLED" type 24.
A very scarce philatelic rarity from the famous King George V Seahorses stamp issue.
GB Specialised Catalogue No: N72(3)u.
The Stanley Gibbons catalogue only lists the value of a mounted mint example at £4,250. Unmounted mint examples are much rarer and have sold in the market in the past for £6,000.