Coins of Ireland
Irish coins have been issued by a variety of local and national authorities, the ancient provincial Kings and High Kings of Ireland, the Kingdom of Ireland (1541–1801), the United Kingdom of Great Britain and Ireland (1801–1922), the Irish Free State (1922–1937), and the present Republic of Ireland. Some modern British coins have Northern Ireland symbols (such as flax and the harp) but these are circulated throughout the UK.
Hiberno-Norse coins were first produced in Dublin in about 997 AD under the authority of King Sitric Silkbeard. The first coins were local copies of the issues of Aethelred II of England of England, and as the Anglo-Saxon coinage of the period changed its design every six years, the coinage of Sitric followed this pattern.
Following the Battle of Clontarf in 1014 AD the Hiberno-Norse coinage ceased following this pattern and reverted to one of its earlier designs—the so-called 'long cross' type. Coins of this general design (with occasional new designs incorporated briefly from other English and European issues) were struck in decreasing quality over a period of more than 100 years. By the end of the series the coins had become illegible and debased, and were too thin to serve for practical commerce.
All the coins produced were the penny denomination. They were initially produced at the penny standard (i.e. one pennyweight or 1/240th of a pound of silver) but the later pieces are both debased and lightweight.
Baronial coins of Ulster
Regal hammered coinage
The coins which followed the Norman conquest (farthings, halfpennies and pennies) were minted to the same standard as those of England. A chief purpose of these coins was to provide a means for the export of silver from Ireland.
Later pieces followed the standard of England until 1460 when a lower, Irish standard was introduced with coins weighing ¾ of their English counterparts. This coincided with the introduction of a larger denomination, the groat (4 pence). Half groats followed in 1483. Edward VI issued the first Irish shillings following debasement of the coinage during the reign of Henry VIII. Prior to the reign of King Henry VIII (1509–47), the Irish coinage carried the title 'Dominus Hiberniae' (or Lord of Ireland). After 1535, Henry took the title King of Ireland.
In 1561, Elizabeth I introduced a higher standard of silver coinage for a few years before returning to a base standard. Copper halfpennies and pennies were also introduced. Higher standard issues were resumed by James I but all Irish issues ceased in 1607. During the English Civil War, a number of local coins were issued in Ireland.
Early milled regal coinage
Civil War coinage of 1689–91
These coins were struck by the deposed King James II after he fled to France. These coins are unique because they show the month of issue as well as the year. As there was a shortage of metal for coinage, church bells and possibly old cannon were melted down, thus giving rise to the name Gun money or Gunmoney. These coins were declared illegal tender after King William III's victory at the Battle of the Boyne in July 1690.
A second issue of emergency coinage, consisting of farthings and halfpennies, was issued in 1691 for use in Limerick.
Later Crown coinage
After the end of the English Civil War, copper farthings and halfpennies resumed production, and pennies were added in 1805. In 1804, the Bank of Ireland introduced silver tokens for 6 shillings which were overstrikes on Spanish dollars. These were followed by 5, 10 and 30 pence Irish tokens. The last halfpennies and pennies were minted in 1823.
Coins of the Irish Free State, then Ireland/Éire
The newly independent Irish Free State circulated new national coinage in 1928, marked Saorstát Éireann (Irish Free State). Irish and British coinage were mutually acceptable in the Free State at an equal rate. In 1937, when the Free State was supplanted by Ireland/Éire, the coins became marked Éire and the Irish Pound (IEP, Punt) remained pegged at par to sterling. Both Ireland (a republic since 1949) and the United Kingdom decimalised their currencies in 1971, and parity continued until Ireland joined the European Exchange Rate Mechanism in 1979. An exchange rate between the Irish pound and the pound sterling was established on 30 March 1979. The British and Irish 1p and 2p coins remained unofficially interchangeable until the euro was introduced in 2002, partly due to their identical size and shape.
Ireland adopted the euro as its currency along with most of its EU partners on 1 January 2002. The national side of the Irish euro coins bears the coat of arms of Ireland and the 12 stars of the EU, the year of imprint and the Irish name for Ireland, Éire, in the traditional Irish script. These coins circulate throughout the eurozone.
Coins of Northern Ireland
Northern Ireland has continued to use British coinage since the partition of Ireland. The British one pound coin has featured varying designs to represent England, Scotland, Wales, Northern Ireland, and the UK as a whole. The 1986 and 1991 issues featured a flax plant in a coronet, the 1996 issue featured a celtic cross and Flax Flower, and the 2006 coin featured MacNeill's Egyptian Arch all representing Northern Ireland within the United Kingdom.
These coins are not unique to Northern Ireland and circulate through the entire United Kingdom and other sterling area countries.