Silver series. Non-clad silver quarters weigh 6.25 grams and are composed of 90% silver, 10% copper, with a total silver weight of 0.1808479 troy ounce pure silver. They were issued from 1932 through 1964.
Roosevelt and Mercury Dimes, Washington Quarters, and Walking Liberty Franklin and Kennedy Half-Dollars minted in 1964 and earlier are 90% silver. The value of most circulated coins minted in the 1920′s through 1964 is primarily from their silver content.
Similar to other 90% Silver U.S. coins, Silver quarters are oftentimes referred to as “junk Silver”. Value for quarters will differ with the metal content in each coin.
See melt values for U.S. silver coins, including morgan silver dollars and silver quarters. NGC provides historical coin melt values, coin price information and a.
Even though the US half dollar only had its silver content reduced from 90% to 40%, a law passed in 1970 stripped the silver from it as well.