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 Austro-Hungarian krone The Hungarian coins were minted in the famous mint of Körmöcbánya (now Kremnica, Slovakia). Denominated coins for Hungary: 1, 2, 10 and 20 fillér; 1, 2, 5, 10, 20 and 100 korona. Review of 20 Austro-Hungarian Coronas (1892-1914) Coins of the Austro-Hungarian krone Austro-Hungarian krone coins were minted with different design (but the same technical parameters) in Austria and Hungary. The Austrian coins were minted in Vienna. Denominated coins for Austria: 1, 2, 10 and 20 Heller; 1, 2, 5, 10, 20 and 100 Corona (the Latin form of the name was used on coins). The Austrian 100 corona is