As of 2014, the quarter produced by the U.S. Mint is made of 91.67 percent copper and 8.33 percent nickel, as mandated by the Mint Act of 1965. Prior to 1965, the quarter was made of silver.
The U.S. Mint first started making quarters in 1796. Early quarters used a female depiction of liberty on one side and an eagle on the other, and no value was printed on the coin until 1804. In 1932 to mark the 200th anniversary of George Washington's birth, the quarter was redesigned to show Washington on one side and the eagle on the other.