Great Britain 1840 1d black Plate 2, SG2Great Britain 1840 1d Black Plate 2, SG2 2nd Sunday Franking An outstanding early usage of the worlds first postage stamp. A very fine used four margin example of the 1840 1d black from Plate 2, lettered 'AK', tied to a clean entire envelope by a crisp red Maltese Cross cancellation. Sent from Manchester to Sheffield, the reverse bears a clear Manchester datestamp for 'MY 17 1840', the second Sunday after the stamps official release. A rare and highly