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 Hungarian forint new money. The first coins minted in 1946 were made of copper alloys in the case of the fillér coins and aluminium in the case of the 1 & 2 forint coins. Although the forint was based on gold standard, only silver coins were minted in the first 2 years: 5 forint coins made of good quality silver were put into circulation. However, the government fear of hoarding these coins convinced the national bank to lower the mass and quality of silver used for the 1947 strike. Finally, no silver 5 forint coins were minted for general circulation after 1947.