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The amount of silver in a United States silver dollar varies significantly depending on the specific type of coin and the year it was minted. The term "silver dollar" can refer to several distinct series of coins, each with a different metallic composition.
For the classic silver dollars that were minted for circulation, such as the Morgan Dollar (1878-1904, 1921) and the Peace Dollar (1921-1935), the composition is standardized. These coins were produced from an alloy of 90% silver and 10% copper. The total weight of one of these coins is 26.73 grams, which means the actual silver weight is 24.057 grams, or approximately 0.7734 troy ounces of pure silver. This 90% silver standard was common for most U.S. silver coinage of the era.
Later, from 1971 to 1978, the U.S. Mint produced the Eisenhower dollar. The versions intended for general circulation contained no silver at all; they were made of a copper-nickel clad composition. However, special collector's editions, primarily proofs and uncirculated versions bearing an "S" mint mark, were composed of 40% silver. These "silver-clad" Eisenhower dollars contain approximately 0.316 troy ounces of silver.
Finally, the modern American Silver Eagle, first minted in 1986, is a bullion coin with a face value of one dollar but is not intended for circulation. Its value is based on its precious metal content. These coins are specifically struck to contain one troy ounce of .999 fine silver, making them a popular investment vehicle for silver. Therefore, identifying the specific coin is crucial to determining its silver content.
