Trial of the Pyx Trial of the Pyx The Trial of the Pyx () is the procedure in the United Kingdom for ensuring that newly minted coins conform to the required standards. These trials have been held from the twelfth century to the present day, normally once per calendar year. The form of the ceremony has been essentially the same since 1282 AD. These events are trials in the full judicial sense, presided over by a judge with an expert jury of metallurgical assayers. Given modern production methods, it is unlikely that coins would not conform, but this has been a problem in the
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.