January 14, 2010, will already be marked in the calendars of philatelists, for Spink's Stamps & Covers of the world auction.
A few gems will be hidden among the sale's many lots, including a fresh and fine example of a Great Britain (1873-80) 6d. pale buff abnormal plate 13, MK - originally cancelled by the Irish "157" duplex of Queenstown.
Only 49 of the stamps were ever recorded, most with a Leeds numeral.
Impressively, this is thought to be the only example of the stamp used in Ireland.
It will go under the hammer at Spink in London with an estimate of £7,000-9,000.
A perfect example of one of these stamps could be worth as much as £20,000 according to Stanley Gibbons' price guide.
However, this example has a shortish perforation at the top right and slightly over-inked cancellation, so could sell for a price closer to Spink's pre-sale estimate.
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