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 pengő 5 P). Commemorative 2 and 5 pengő coins were issued on anniversaries in large quantities (hundreds of thousands) and were released into circulation. The coins had Baroque style, the most important designers were János Pálinkás, Lajos Berán, and József Reményi. Although pengő was based on gold standard, and the quality standards of gold coins (10 and 20 pengő) were enacted, no gold coins were released into circulation due to the Great Depression. As a consequence of the war, the government recalled the silver pengő coins (deadline: 31 January 1942) to prevent personal hoarding. These were replaced by newly designed aluminium