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The American Silver Eagle is the official silver bullion coin of the United States.It was first released by the United States Mint on November 24, 1986, and portrays the Goddess of Liberty in a design by Adolph A. Weinman that was originally used on the Walking Liberty half dollar from 1916 to 1947.
Instead, they must be advertised as rounds. [3] Bullion coins are typically available in various weights, usually multiples or fractions of 1 troy ounce, but some bullion coins are produced in very limited quantities in kilograms or heavier.
The privately minted "rounds" usually have a set weight of 1 troy ounce (31.103 g) of 99.9% silver, with the dimensions of 2.54 millimetres (1 ⁄ 10 in) thick and 39 millimetres (1 + 9 ⁄ 16 in) across.
The Noah's Ark silver bullion coins are minted with a fineness of 999/1000. The diameter is 38.6 mm (1 troy ounce) and its edge is reeded. Since the first year of issue in 2011, Noah's Ark coins have been produced in the denominations and sizes of 1 ⁄ 4 (100 Dram), 1 ⁄ 2 (200 Dram) and 1 ounce (500 Dram).
In addition to the annual design change, there is also a design change between the bullion and proof versions of the coin each year. No proof coins were minted between 2006 and 2011; however, there was a 1-ounce silver proof Kookaburra colored coin struck in 2012 for the Discover Australia coin series. [4]
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.
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