Penny Venetian Red of "POSTAGE" and "ONE PENNY" that its predecessors bore. It was decided that a new colour would also be desirable to defend against improper re-use; a fugitive lilac ink was used that would run and spoil the stamp if one attempted to wash off the cancellation. The Lilacs broke the tradition of using corner letters and instead had either fourteen or sixteen dots in each corner. Penny Venetian Red The Penny Venetian Red was a British postage stamp equal to the value of one penny. Issued in 1880, it was designed and surface-printed by security printing company De La Rue.
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