Great Britain 1840 1d Black Plate 1a, SG2Great Britain 1840 1d Black Plate 1a, SG2. A very fine used even four margin example lettered KE, cancelled by a neat red Maltese Cross and a crisp bright blue framed Handsworth 'PyP No. 15' handstamp. A scarce Plymouth Penny Post cancellation and a most attractive example of the world's first and most famous postage stamp from the very first printing plate. GB Specialised Catalogue No: AS2yc. The Stanley Gibbons catalogue value is 3,500. BUY NOW: