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  2. Electrum - Wikipedia

    en.wikipedia.org/wiki/Electrum

    The name is mostly applied informally to compositions between 20–80% gold and 80–20% silver, but these are strictly called gold or silver depending on the dominant element. Analysis of the composition of electrum in ancient Greek coinage dating from about 600 BC shows that the gold content was about 55.5% in the coinage issued by Phocaea .

  3. Euro gold and silver commemorative coins (Austria) - Wikipedia

    en.wikipedia.org/wiki/Euro_gold_and_silver...

    The coin has a silver ring and niobium "pill", colour gold-brown. In the obverse, the inner portion of the coin is a compass rose showing all the cardinal points. The inscription above it shows the exact location coordinates of the Austrian Mint in Vienna. In the reverse, the niobium portion depicts navigation satellites orbiting the Earth. The ...

  4. Sovereign (British coin) - Wikipedia

    en.wikipedia.org/wiki/Sovereign_(British_coin)

    The sovereign is a British gold coin with a nominal value of one pound sterling (£1) and contains 0.2354 troy ounces (113.0 gr; 7.32 g) of pure gold.Struck since 1817, it was originally a circulating coin that was accepted in Britain and elsewhere in the world; it is now a bullion coin and is sometimes mounted in jewellery.

  5. Gold coin - Wikipedia

    en.wikipedia.org/wiki/Gold_coin

    Most gold coins minted since 1800 are 90–92% gold (22‑karat), while most of today's gold bullion coins are pure gold, such as the Britannia, Canadian Maple Leaf, and American Buffalo. Alloyed gold coins, like the American Gold Eagle and South African Krugerrand , are typically 91.7% gold by weight, with the remainder being silver and copper.

  6. Gold dollar - Wikipedia

    en.wikipedia.org/wiki/Gold_dollar

    The continued flow of gold from California made silver expensive in terms of gold, and U.S. silver coins began to flow out of the country for melting in 1849, a flow that accelerated over the next several years as the price of the metal continued to rise. By 1853, a thousand dollars in silver coin contained $1,042 worth of bullion.

  7. Fineness - Wikipedia

    en.wikipedia.org/wiki/Fineness

    For example, copper is added to the precious metal silver to make a more durable alloy for use in coins, housewares and jewelry. Coin silver, which was used for making silver coins in the past, contains 90% silver and 10% copper, by mass. Sterling silver contains 92.5% silver and 7.5% of other metals, usually copper, by mass.

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