The British halfpenny coin was worth 1/480th of a pound sterling. At first in its 700 year history it was made from silver but as the value of the pound declined, the coin was made from base metals. It was finally abandoned in 1969 as part of the process of decimalising the British currency. "Halfpenny" was pronounced "hayp-nee" and 1½d was pronounced "a penny hayp-nee" or "three hay-p'nce"; and colloquially written as "ha'penny" or "ha'pence".
The production of copper coins did not resume until the reign of King George IV (1820–1830), when farthings were produced in 1821. The issue of new halfpennies did not happen until 14 November 1825 as a result of a disagreement between the egocentric designer Pistrucci and the authorities, which resulted in William Wyon being invited to design the coins instead. This delay may be regarded as a good thing, as Wyon's designs are generally considered among the most elegant British coins.
The George IV halfpenny was produced between 1825 and 1827, weighed 9.1–9.5 grams, with a diameter of 28 millimetres. The obverse shows a left-facing laureated bust of King George IV with the inscription GEORGIUS IV DEI GRATIA date, while the reverse shows a right-facing seated helmeted Britannia with a shield and trident, with the inscription BRITANNIAR REX FID DEF. Wyon's preference was to put the date under the king's bust, and to put the rose, thistle, and shamrock in the exergue underneath Britannia where the date commonly appeared before.
The halfpenny of William IV (1830–1837), produced in 1831, 1834, and 1837, continues the George IV design but with a right-facing bust of the new king, with the inscription GULIELMUS IIII DEI GRATIA date, while the reverse is identical to the previous reigns'.