Fourpence (British coin) Fourpence (British coin) The pre-decimal fourpence (4d), sometimes known as a groat (from Dutch "grootpennig" = "big penny") or fourpenny bit, was a coin worth one sixtieth of a pound sterling, or four pence. The coin was also known as a joey after the MP Joseph Hume, who spoke in favour of its introduction. It was a revival of the pre-Union coin. Before Decimal Day in 1971 there were two hundred and forty pence in one pound sterling. Twelve pence made a shilling, and twenty shillings made a pound. Values less than a pound were usually written in terms of
Halfpenny (Irish decimal coin) Halfpenny (Irish decimal coin) The decimal halfpenny (p) () coin was the smallest denomination of the Irish pound. It was first issued when the Irish currency was decimalised on Decimal Day, 15 February 1971. It was one of three new designs introduced all in bronze and featuring ornamental birds on the reverse. The coin value was weakened by inflation and very few were produced beyond the initial run for 1971. It was removed from circulation and demonetised on 1 January 1987. The main reason that halfpennies were issued was that when shillings were decimalised they were worth five new pence,