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Any United States dime, quarter, half dollar or dollar that is dated 1964 or earlier is made of 90% silver. In the dime series, all coins dated 1965 or later are clad coins and contain no silver at all. The value of these coins is tied directly to the price of silver. At $20 per ounce, 90% silver coins are worth about fourteen times their face value. A dime would be worth about $1.40, a quarter about $3.50, and a half dollar, about $6.00. At the same silver price of $20, 40% silver half dollars are worth approximately $2.50 each.
exists and is an alternate of . All silver coins had 10% copper added to make them harder so they would withstand circulation better. Silver was taken out of circulating US coins in 1965 with the exception of the half-dollar which continued to be minted in 40% silver from 1965 until 1970.