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 at Soho Mint in Birmingham in 1797. Typically, 1 lb. of copper produced 24 pennies. In 1860, the copper penny was replaced with a bronze one (95% copper, 4% tin, 1% zinc). Each pound of bronze was coined into 48 pennies. The United States' cent—popularly known as the "penny" since the early 19th century—began with the unpopular copper chain cent in 1793. The penny that was brought to the Cape Colony (in what is now South Africa) was a large coin — 36 mm in diameter, 3.3 mm thick and — and the twopence was correspondingly larger at 41 mm