
The amount of silver in a 1972 United States dollar coin depends entirely on which version of the coin is being referenced. The United States Mint produced two distinct compositions for the Eisenhower dollar that year.
The vast majority of 1972 Eisenhower dollars, those minted for general circulation at the Philadelphia (no mint mark) and Denver (D mint mark) Mints, contain no silver at all. These coins are a copper-nickel clad composition, consisting of an outer layer of 75% copper and 25% nickel bonded to an inner core of pure copper. The colloquial term "silver dollar" is a historical holdover and is a misnomer for these specific clad coins.
In contrast, the U.S. Mint also struck special collector versions of the 1972 dollar at the San Francisco Mint, which are identifiable by an "S" mint mark. These uncirculated and proof coins were specifically created for collectors and were composed of 40% silver and 60% copper. Each of these 40% silver coins contains approximately 0.3161 troy ounces of pure silver. Therefore, to determine if a 1972 dollar has silver, one must check for the "S" mint mark.
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