Great Britain 2004 E Brecon Beacons, Wales, SG2468var.
A superb unmounted mint, with full original gum, complete imperforate proof sheetlet of 25, containing twelve imperforate pairs, complete with full sheet selvedge showing cylinders and traffic lights.
Very similar to the issued stamp with slightly brighter colours and the value "E" instead of "40" as issued.
A key QEII rarity being the only sheet so far recorded.
Last sold by Stanley Gibbons in 2009 for £12,000.
