Great Britain 1912 2½d pale blue variety, unmounted mint marginal strip of five, SG372var
A very fine unmounted mint, with full original gum, left hand marginal vertical strip of five showing complete ""POSTAGE"" watermark with selvedge attached. The selvedge showing ""POSTAGE"" watermark inverted. A magnificent example of this very rare King George V watermark printing variety. GB Specialised Catalogue No: N21(11)yc. Accompanied with a 2012 Royal Philatelic Society (RPS) Certificate of Authenticity. SG Catalogue Value: £4,500.
