Troy weight A grain is 20 mites, a mite is 24 droits, a droit is 20 perits, a perit is 24 blanks. In Scotland, the Incorporation of Goldsmiths of the City of Edinburgh used a system in multiples of sixteen. ("See Assay-Master's Accounts, 1681–1702, on loan from the Incorporation to the National Archives of Scotland".) Thus, there were 16 drops to the troy ounce, 16 ounces to the troy pound, and 16 pounds to the troy stone. The Scots had several other ways of measuring precious metals and gems, but this was the common usage for gold and silver. The Pound was
Texas Precious Metals Metals (NASDAQ: AMRK), a publicly traded precious metals wholesaler, to manufacture and distribute Texas Mint products to dealers throughout the United States. In 2014, Texas Precious Metals and the Perth Mint of Australia released the Houston-Perth "Sister Cities" coin, commemorating the strong ties between the cities' energy sectors. The half-ounce, 99.9% pure silver coin features offshore and onshore oil rigs showcasing the cities' historic energy sectors. The coin also pays homage to the flags of Texas and Australia. The coin measures 32mm in diameter with a thickness of 2mm, and has a legal tender face value of AUD$0.50. The coins