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2. Troy weight - Wikipedia

   en.wikipedia.org/wiki/Troy_weight

   The only troy weight in widespread use is the British Imperial troy ounce and its American counterpart. Both are based on a grain of 0.06479891 gram (exact, by definition), with 480 grains to a troy ounce (compared with 437 + 1 ⁄ 2 grains for an ounce avoirdupois). The British Empire abolished the 12-ounce troy pound in the 19th century.

3. American Silver Eagle - Wikipedia

   en.wikipedia.org/wiki/American_Silver_Eagle

   The American Silver Eagle is struck only in the one-troy ounce, which has a nominal face value of one dollar and is guaranteed to contain one troy ounce of 99.9% pure silver. It is authorized by Title II of Public Law 99-61 (Liberty Coin Act, approved July 9, 1985) and codified as 31 U.S.C. § 5112(e)-(h). Its content, weight, and purity are ...

4. List of bullion coins - Wikipedia

   en.wikipedia.org/wiki/List_of_bullion_coins

   in troy ounces (ozt) 1 oz mintage (2018) Years minted Australia: ... Silver Eagle.999: 1: 15,700,000 [17] 1986–present Limited series. Country Name of bullion coin

5. Chinese Silver Panda - Wikipedia

   en.wikipedia.org/wiki/Chinese_Silver_Panda

   In 2015, the Gold and Silver Panda coins were not labeled with metal fineness and weight. This information returned in 2016 when the 1 troy ounce coin was replaced by the 30-gram coin (one troy ounce is approximately 31.1 grams). [1] The official distributor in China for the Silver and Gold Panda coins is the China Gold Coin Incorporation (CGCI).

6. America the Beautiful silver bullion coins - Wikipedia

   en.wikipedia.org/wiki/America_the_Beautiful...

   A new coining press from Germany, the Grabener 1000 press, was installed on March 1, 2010, at the Philadelphia Mint for use in producing the America the Beautiful Silver Bullion Coins. The press provides up to 1,000 metric tons (1,100 short tons ) of pressure for each strike and can produce in excess of 1 million coins per year.

7. Fineness - Wikipedia

   en.wikipedia.org/wiki/Fineness

   1 troy ounce of four nines fine gold (999.9) 999.999—six nines fine: The purest gold ever produced. Refined by the Perth Mint in 1957. [3] [4] 999.99—five nines fine: The purest type of gold currently produced; the Royal Canadian Mint regularly produces commemorative coins in this fineness, including the world's largest, at 100 kg. [5]