Halfpenny (British decimal coin) Halfpenny (British decimal coin) The British decimal halfpenny (p) coin was introduced in February 1971, at the time of decimalisation, and was worth one two-hundredth of a pound sterling. It was ignored in banking transactions, which were carried out in units of 1p. The decimal halfpenny had the same value as 1.2 pre-decimal pence, and was introduced to enable the prices of some low-value items to be more accurately translated to the new decimal currency. The possibility of setting prices including an odd half penny also made it more practical to retain the pre-decimal sixpence in circulation (with a value
Coins of the pound sterling these had a face value of twenty-five pence (25p), equivalent to the five shilling crown used in pre-decimal Britain. However, in 1990 crowns were redenominated with a face value of five pounds (£5) as the previous value was considered not sufficient for such a high-status coin. The size and weight of the coin remained exactly the same. Decimal crowns are generally not found in circulation as their market value is likely to be higher than their face value, but they remain legal tender. In 2008, UK coins underwent an extensive redesign, which changed the reverse designs, and some other details,