Metallurgical assay and the U.S. Mint continue to produce precious metal bullion coins for collectors and investors. The precious metal purity and content of these coins is guaranteed by the respective mint or government, and, therefore, the assay of the raw materials and finished coins is an important quality control. In the UK, the Trial of the Pyx is a ceremonial procedure for ensuring that newly minted coins conform to required standards. Metallurgical assay A metallurgical assay is a compositional analysis of an ore, metal, or alloy. Some assay methods are suitable for raw materials; others are more appropriate for finished goods.
Coins of the Canadian dollar and was succeeded by his son, King George V. His effigy appeared on all coins minted in Canada afterwards, as soon as new dies were obtained. The initial issue of George V coinage is known as the "Godless" coinage, because the abbreviation "DEI GRA", (for "DEI GRATIA" or "[king] by the grace of God"), was omitted from King George V's titles. When the public noticed this, there was a huge outcry at this breach of tradition, and the phrase was later restored. All the coins from the 1¢ to 50¢ were issued. The 50¢ is the scarcest of all the