Great Britain 1851 2d violet blue on thick Iavender tinted paper Plate 4, SG15aa

Great Britain 1851 2d violet blue on thick Iavender tinted paper Plate 4, SG15aa.

A superb unused, with original gum, good to large four margin example Ieltered 'RF' of this rare shade variety. Beautiful fresh colour and gum.

In 1851 a few sheets of the new Twopenny Blue were printed and something went wrong…

The printing ink reacted with a bleaching agent in the paper creating the rarest shade of the 2d Blue – “The 2d Violet Blue”.

There are less than 20 known surviving mint examples of this very rare stamp.

GB Specialised catalogue no: ES16.

Accompanied with a 2012 British Philatelic Association (BPA) Certificate of Authenticity.

Stanley Gibbons catalogue value: £22,000.

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