The provided context is insufficient for a complete response, as it consists primarily of website navigation links rather than substantive information. However, based on established numismatic facts, the answer to whether U.S. quarters contain silver depends entirely on their year of mintage.
United States quarters minted for general circulation in 1964 or earlier are composed of 90% silver and 10% copper. This silver composition applies to the Washington quarter design, which began in 1932, as well as to earlier designs like the Standing Liberty and Barber quarters. These coins contain approximately 0.1808 troy ounces of pure silver.
The composition of the quarter was changed due to the rising price of silver in the early 1960s. The Coinage Act of 1965 was enacted to remove silver from circulating coinage because the intrinsic metallic value of the coins had begun to exceed their face value. Consequently, quarters minted from 1965 to the present are "clad" coins. They consist of a pure copper core bonded to two outer layers of cupronickel, an alloy of 75% copper and 25% nickel. This composition gives modern quarters their distinct copper-colored edge.
There are, however, specific exceptions to this rule. During the nation's bicentennial, special-issue quarters dated 1776-1976 were struck for collectors in a 40% silver clad composition. Furthermore, the U.S. Mint continues to produce silver quarters for inclusion in annual proof sets and other numismatic products intended for collectors. These modern silver proof quarters are typically struck in either 90% or 99.9% silver and are not intended for general circulation. Therefore, to determine if a U.S. quarter contains silver, the primary indicator is the date on the coin.
