Penny Blue Penny Blue The Penny Blue is frequently mistaken for a postage stamp of Britain. It is from a series of proof impressions which were made at the time Rowland Hill was looking at the new colours which were to be used for the stamps which were to replace the Penny Black and the original 1840 issue of the Two pence Blue. The decision to change the black stamp to red had already been made, and at the same time the colour of the ink used for the cancellations was to be changed from red to black. Although it had been
Penny Black sheet to present as gifts to dignitaries and other important people. Individual stamps from an Imprimatur sheet can thus be found for sale on the open market. A complete sheet of the Penny Black without check letters is held by the British Postal Museum. This unique item is in fact a plate proof, and by definition not an imprimatur sheet. The Penny Black was printed from 11 plates, but as Plate 1 was completely overhauled due to excessive wear, it is generally considered to be two separate plates, 1a and 1b. Plate 11 was originally intended solely for the printing