Penny Black print run was 286,700 sheets, containing a total of 68,808,000 stamps. Many were saved, and in used condition they remain readily available to stamp collectors. The only known complete sheets of the Penny Black are owned by the British Postal Museum. In addition to the general issue of the Penny Black, a similar stamp intended for official mail was produced, with the letters "V" and "R" replacing the crosses in the top corners. Because the general public quickly accepted the postage stamps and ridiculed the Mulready stationery produced at the same time, vast supplies of Mulready letter sheets were given
Penny Post local post that used a uniform rate of one old penny for delivery of letters and packets weighing up to one pound within the cities of Westminster and London as well as in Southwark. Several deliveries took place a day within the city, and items were also delivered to addresses up to ten miles outside London for an extra charge of one penny. In 1683 Dockwra was forced to surrender the Penny Post to the English Monarchy for circulating what were considered seditious newsletters sharply criticizing the Duke of York, who was in charge of and directly benefited from the