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  2. Valcambi - Wikipedia

    en.wikipedia.org/wiki/Valcambi

    Valcambi is a precious metals refining company located in Balerna, Switzerland, and a subsidiary of Rajesh Exports Limited. Valcambi is owned by European Gold Refineries, which is owned by Global Gold Refineries AG, which in turn is 95% owned by REL Singapore PTE Ltd. and 5% by Rajesh Exports Limited India.

  3. List of bullion coins - Wikipedia

    en.wikipedia.org/wiki/List_of_bullion_coins

    Bullion coins are government-minted, legal tender coins made of precious metals, such as gold, palladium, platinum, rhodium, and silver. They are kept as a store of value or an investment rather than used in day-to-day commerce. [1]

  4. Isotopes of silver - Wikipedia

    en.wikipedia.org/wiki/Isotopes_of_silver

    Naturally occurring silver (47 Ag) is composed of the two stable isotopes 107 Ag and 109 Ag in almost equal proportions, with 107 Ag being slightly more abundant (51.839% natural abundance). Notably, silver is the only element with all stable istopes having nuclear spins of 1/2.

  5. Libertad (coin) - Wikipedia

    en.wikipedia.org/wiki/Libertad_(coin)

    The Libertad coins are silver and gold bullion coins originating from Mexico and minted by the Casa de Moneda de México (Mexican Mint). The Mexican Mint was established in 1535 and is the oldest mint in the Americas. The modern coins contain 99.9% silver or gold (.999 fineness) and are available in various sizes. Both metal coins have ...

  6. Fineness - Wikipedia

    en.wikipedia.org/wiki/Fineness

    917: a standard used for the minting of Indian silver , during the British raj and for some coins during the first Brazilian Republic. 916: 88 zolotnik Russian silver; 900: one nine fine, coin silver, or 90% silver: e.g. Flowing Hair and 1837–1964 U.S. silver coins. Also used in U.S. silver commemorative coins and silver proof coins 1982–2018.

  7. Barber coinage - Wikipedia

    en.wikipedia.org/wiki/Barber_coinage

    Woolley advocated the replacement of the silver coins when it was legal to do so, and instructed Barber and Morgan to prepare new designs. He consulted with the Commission of Fine Arts , asking them to examine the designs produced by the Mint's engravers and, if they felt they were not suitable, to recommend artists to design the new coins.

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