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The coinage metals comprise those metallic chemical elements and alloys which have been used to mint coins. Historically, most coinage metals are from the three nonradioactive members of group 11 of the periodic table: copper, silver and gold. Copper is usually augmented with tin or other metals to form bronze.
Group 11 is also known as the coinage metals, due to their usage in minting coins [2] —while the rise in metal prices mean that silver and gold are no longer used for circulating currency, remaining in use for bullion, copper remains a common metal in coins to date, either in the form of copper clad coinage or as part of the cupronickel alloy.
Precious metals (platinum, gold and silver) in the form of bars, ingots or plate, or in any context where weight is considered as a valuation. bullion coin Precious metals in the form of coins whose market value is determined by metallic content rather than scarcity. bullion value The current market value of the raw precious metal content of a ...
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Striking a coin refers to pressing an image into the blank metal disc, or planchet, and is a term descended from the days when the dies were struck with hammers to deform the metal into the image of the dies. Modern dies made out of hardened steel are capable of producing many hundreds of thousands of coins before they are retired and defaced.
For new coinage, the old style of a large number was replaced instead with the national Garuda Pancasila logo, with the year and "BANK INDONESIA" in smaller text below the emblem. A 25 rupiah coin dated 1991 in aluminium, with images of nutmeg and its Indonesian text 'buah pala' and "Rp 25" on the reverse, was the smallest coin to be revised.
The high quality of Fatimid coinage was deliberately used as a political tool by al-Mu'izz: during the Fatimid conquest of Egypt in 969, one of the core promises of the Fatimid general Jawhar to the inhabitants of Fustat was the restoration of the quality of the coinage, [48] and even before the conquest itself, Fatimid dinars bearing the mint ...
Coinage may refer to: Coins, standardized as currency; Coining (mint), the process of manufacturing coins; COINage, a numismatics magazine; Tin coinage, a tax on refined tin; Coinage, a protologism or neologism