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 people still reused stamps by combining the uncancelled parts of two stamps to form an unused whole, so in 1864 as a further safeguard the top corner stars on the Penny Red were replaced by the lower corner check letters in reverse order. Imprimatur sheets are from among the first sheets of stamps printed from a finished printing plate. The actual imprimatur (Let it be printed) refers to the written permission of the Inland Revenue officials entered on the back of the sheet of stamps. In the 19th century, it was common for officials to remove some stamps from each