Penny Post He circulated mail to 17 shops in the city (effectively post offices) and employed 4 uniformed postmen. Their hats read "Penny Post" and were numbered 1,4,8 and 16 to make the business look bigger. On 5 December 1839 the Uniform Fourpenny Post was introduced by the General Post Office but lasted only 36 days until 9 January 1840 when the Uniform Penny Post was introduced. The penny post box was green. In 1835 Rowland Hill published a pamphlet entitled 'Post Office Reform' which led to various reforms and the introduction of the first postage stamp and convinced Parliament to implement
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