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 Romanian leu (it was a dodecagon). This made it awkward to handle and difficult to use in slot machines, where it was frequently the only coin accepted. The 500, 1,000 and 5,000 lei coins became worth 5, 10 and 50 bani with the revaluation. In 2005, the following coins were introduced for circulation: Coins of the Romanian leu The Coins of the Romanian leu have been issued since the introduction of the Romanian leu in 1867. In 1867, copper 1, 2, 5 and 10 bani were issued, with gold 20 lei (known as "poli" after the French Napoleons) first minted the next