As of August 2015, precious metals retailers such as Apmex, Provident Metals and CMI Gold & Silver sell silver coins dated 1964 and earlier. These coins, usually called 90 percent silver or junk silver, typically come in bags worth $100, $500 or $1,000 in face value.
Retailers price silver coins based on the spot price of silver rather than the face value. Silver coins may also carry a premium based on supply and demand. A $1,000 face-value bag contains approximately 715 ounces of silver.
90 percent junk silver coins are dimes, quarters and half-dollars produced from 1916 to 1964. Nickels produced from 1942 to 1945 are 35 percent silver.