Great Britain 1840 2d Blue, SG5Great Britain 1840 2d Blue 1840 2d Blue Plate 1, SG5. A very fine used close to large four margin horizontal strip of four lettered OC OF showing shifted transfer variety on OC, neatly cancelled by black Maltese Crosses. A scarce multiple of the first printing of the world's second postage stamp and a real showpiece. GB Specialised Catalogue Number: DS5 c Accompanied with a 2010 British Philatelic Association (BPA) Certificate of Authenticity. ALERT