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,
Coins of the Canadian dollar started issuing their own coins denominated in cents, featuring the likeness of Queen Victoria on the obverse. These replaced the sterling coins previously in circulation. The Province of Canada was the first to issue decimal coins. They were based on the value of the American dollar, due to an influx of American silver. Denominations issued were 1¢, 5¢, 10¢, and 20¢. The 1¢ coin was issued again in 1859, but it was very unpopular due to its extremely light weight. The coins had to be discounted by around 20% to get them into circulation. Other colonies that issued decimal coinage