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It was minted in 0.2204 oz. (6.25 g) of 90% fine silver until 1964, when rising silver prices forced the change into the present-day cupronickel-clad-copper composition, which was also called the "Johnson Sandwich" after then-president Lyndon B. Johnson. [13] As of 2011, it cost 11.14 cents to produce each coin. [14]
84 zolotnik Russian silver has the equivalent millesimal fineness of 875. The alloy contains 87.5% pure silver and 12.5% copper or other metals. (See above for description of the zolotnik.) [4] [9] Scandinavian silver has a millesimal fineness of 830. The Scandinavian silver alloy contains 83% pure silver and 17% copper or other metals. [10]
Prior to 1965 and passage of the Coinage Act of 1965 the composition of the dime, quarter, half-dollar and dollar coins was 90% silver and 10% copper. The half-dollar continued to be minted in a 40% silver-clad composition between 1965 and 1970.
1960's -1970's: Some circulating coins still used silver in their composition, such as 1965-70 Kennedy half dollar coins, which were debased from 90% silver to 40% silver. However, as silver's metal value continued to increase, resulting in additional hoarding by the public, these coins were eventually debased entirely to cupronickel clad coinage.
From 1992 to 2018, 90% silver coins were made for inclusion in special "Limited Edition" silver proof sets. Beginning 2019 coins in the special silver proof sets are produced from pure (.999) silver. All coins minted in 1975 and 1976 for the United States Bicentennial bore the dates "1776-1976".
The specifications of bullion are often regulated by market bodies or legislation. In the European Union, the minimum purity for gold to be referred to as "bullion", which is treated as investment gold with regard to taxation, is 99.5% for gold bullion bars and 90% for bullion coins. [2]
A silver dollar would be worth $1 in silver if the price of silver is $1.29 per troy ounce. The current silver price (January 29, 2021) is $27.03 per troy ounce so a silver dollar is worth, in melt value of about US$20.90.
A 2019 American Silver Eagle bullion coin with a fineness of 999 (three nines fine), together with a Walking Liberty half dollar with a fineness of 900 (one nine fine); this latter alloy is also often referred to as 90% silver or coin silver. 999.99—five nines fine: The purest silver ever produced. This was achieved by the Royal Silver ...