Penny Black printing plates Penny Black printing plates The printing plates for the Penny Black, two pence blue and the VR official were all constructed by Perkins Bacon, the printers of the first postage stamps issued in Great Britain. The construction of these plates was long and complicated, which was intentional so as to make the forgery of the finished article almost impossible. The first stage involved the engraving of a background for the design. This was produced with a rose engine which laid down a circular pattern of symmetrical design onto a piece of soft steel. This was then partly cleared to leave
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