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 20 Forint coin. The 200 Forint coin was made of .500 fine silver. From 1994, mass minting of the 200 Forint coin was stopped, since the price of the metal was getting higher than the face value of the coin. However, small issues for collector purposes were minted until 1998, when both the 1992 type 100 Forint and the 200 Forint coins were withdrawn from circulation. The 1 and 2 Forint coins were withdrawn from circulation on March 1, 2008. This was announced by the Hungarian National Bank in September 2007, pointing out that the cost of minting them is