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 1950. As a consequence of the Hungarian Revolution of 1956 the coat of arms was changed again, this version was used from 1957 until 1989. In 1992, a new series of coins was introduced with denominations of 1, 2, 5, 10, 20, 50 and 100 Forint . Production of the 2 and 5 fillér ceased in 1992, with all fillér coins withdrawn from circulation by 1999. From 1996, a bimetallic 100 Forint coin was minted to replace the 1992 version, since the latter was considered to be "too big and ugly" by many, and could be easily mistaken with the