Great Britain 1840 1d Black Plate 1, 1a and 2d blue Plate.1. Superb combination entire bearing two 1d black plate 1a lettered GC and FK and a 2d blue Plate 1 lettered AC each neatly cancelled by a crisp red Maltese Cross. Sent from London to Manchester with a London circular date stamp on reverse for MY.28.1840 then redirected (as requested in the contents of the letter) without further postage to Ashgrove, Herts. A magnificent 4d combination franking, believed unique with a May usage 1991 Holcombe Certificate. Ex Sir Leonard Atkinson & GL. SG2/5 Pl1.