Royal Mint other manufacturers. The Trial of the Pyx is the procedure in the United Kingdom for ensuring that newly-minted coins conform to required standards. The trials have been held since the twelfth century, normally once per calendar year, and continue to the present day. The form of the ceremony has been essentially the same since 1282. They are trials in the full judicial sense, presided over by a judge with an expert jury of assayers. Since 1871, the trials have taken place at the Hall of the Worshipful Company of Goldsmiths, having previously taken place at the Palace of Westminster. Given
Coins of the Ukrainian hryvnia coins exist in denominations of 1 kopiyka (i.e. or ₴0.01), 2, 5, 10, 25, 50 kopiyok, ₴1.00 and ₴2.00. Also minted are bullion (including gold, silver and platinum) and commemorative coins. All of these are produced by the National Bank of Ukraine. In October 2012 the National Bank of Ukraine announced that it is examining the possibility of withdrawing the 1 and 2 kopeck-coins from circulation.[5] The coins had become too expensive to produce compared to their nominal value. Also, on 26 October 2012, the National Bank of Ukraine announced it is considering the introduction of a 2 Hryvnia coin.