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 Canadian dollar $10 denominations, though sovereigns, to British standards, were issued in small quantities for some years. The minting of gold coins for circulation ceased due to the onset of the first world war, when the government of Canada recovered the majority of circulating gold coins to finance the war. Reissue plans were dropped in 1928. According to the Mint, a large quantity of the 1912–1914 gold coins were stored by the Bank of Canada for over 75 years. In 2012, the Mint offered 30,000 coins from the collection for sale to the public through its retail channels and stated that it