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2. Gold - Wikipedia

   en.wikipedia.org/wiki/Gold

   Today, gold mining output is declining. [162] With the sharp growth of economies in the 20th century, and increasing foreign exchange, the world's gold reserves and their trading market have become a small fraction of all markets and fixed exchange rates of currencies to gold have been replaced by floating prices for gold and gold future ...

3. American Buffalo (coin) - Wikipedia

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

   The design of the American Buffalo gold bullion coin is a modified version of James Earle Fraser's design for the Indian Head nickel (Type 1), issued in early 1913. After a raised mound of dirt below the animal on the reverse was reduced, the Type 2 variation continued to be minted for the rest of 1913 and every year until 1938, except for 1922, 1932, and 1933 when no nickels were struck.

4. American Gold Eagle - Wikipedia

   en.wikipedia.org/wiki/American_Gold_Eagle

   2021–present. The American Gold Eagle is an official gold bullion coin of the United States. Authorized under the Gold Bullion Coin Act of 1985, it was first released by the United States Mint in 1986. Because the term "eagle" also is the official United States designation for the pre-1933 ten dollar gold coin, the weight of the bullion coin ...

5. Fineness - Wikipedia

   en.wikipedia.org/wiki/Fineness

   For example, knowing that standard 18-karat yellow gold consists of 75% gold, 12.5% silver and the remaining 12.5% of copper (all by mass), the volume of pure gold in this alloy will be 60% since gold is much denser than the other metals used: 19.32 g/cm 3 for gold, 10.49 g/cm 3 for silver and 8.96 g/cm 3 for copper.

6. Gold certificate (United States) - Wikipedia

   en.wikipedia.org/wiki/Gold_certificate_(United...

   Gold certificate (United States) Gold certificates were issued by the United States Treasury as a form of representative money from 1865 to 1933. While the United States observed a gold standard, the certificates offered a more convenient way to pay in gold than the use of coins. General public ownership of gold certificates was outlawed in ...

7. Goldback - Wikipedia

   en.wikipedia.org/wiki/Goldback

   The term "Goldback" refers to each unit of the currency and is 1/1000 of an ounce of pure gold. [citation needed] The Goldbacks are issued in "denominations" of 1, 5, 10, 25, and 50, each containing proportionally larger amounts of gold. [2][3][4] The notes are minted by Valaurum, a private mint. Valaurum uses a vacuum deposition process to ...