Great Britain 1841 1d red brown Plate 90, SG8s.
A superb unmounted mint, with full original gum, four margin example lettered "LI", overprinted "SPECIMEN" type 1.
A very scarce Post Office specimen. Only a very small number of sheets of the 1841 1d red were handstamped SPECIMEN around 1849 and supplied to foreign postal administrations, including Prussia, Austria and Naples, as official examples of British adhesive postage stamps while those countries were preparing to introduce adhesive stamps of their own.
An exceptional unmounted example of considerable significance in the development of international postage stamps.
SG Catalogue Value: £2,000+.
