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.
The Great Debasement coin be reproduced. For the next two years the newly minted debased coins including the reintroduced Testoon were stockpiled in Jewel Tower in the Palace of Westminster while production of coins at the current standard continued. By May 1544 a lack of bullion arriving at the mint prompted the government to issue the secret indenture and allow the debased coins to enter into general circulation. Two months later in July 1544 merchants of the Low Countries discovered that newly minted silver groats had become debased and begun offering a lower price for them. The introduction of these debased coins caused