Great Britain 1840 1d Grey black Plate 1a. SG3Great Britain 1840 1d Grey black Plate 1a, SG3. Very fine used large four margin horizontal pair lettered LE LF showing moderate plate wear, neatly cancelled by red Maltese Crosses. A scarce and attractive multiple of the first printing plate of the world's first stamp. Plate 1 of the 1d black was first registered on 15 April 1840. As the plate had not been hardened it soon showed signs of wear. Consequently, a second sheet is recorded as having been