Coins of the pound sterling chronologically. All genuine UK coins are produced by the Royal Mint. The same coinage is used across the United Kingdom: unlike banknotes, local issues of coins are not produced for different parts of the UK. The pound coin until 2016 was produced in regional designs, but these circulate equally in all parts of the UK (see UK designs, below). Every year, newly minted coins are checked for size, weight, and composition at a Trial of the Pyx. Essentially the same procedure has been used since the 13th century. Assaying is now done by the Worshipful Company of Goldsmiths on behalf
Coins of the Republic of Ireland committee did not know whose designs were being judged. Percy Metcalfe's designs were chosen and design modifications were added with assistance from civil servants at the Department of Agriculture. The first coins were struck in 1928 and were minted at the Royal Mint in London. In 1938, following the introduction of the Constitution of Ireland, the obverse of the coins was modified with the Irish language name of the State, "Éire", and the harp was also modified so that it wore better. The Central Bank Act, 1942 Section 58 allowed pure nickel to be substituted with a cupro-nickel alloy. The