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 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