U.S. quarters or quarter dollars debuted in 1796 and were struck in 90% silver until 1964 when U.S. quarter composition was changed to copper-nickel clad due to the ever rising cost of silver. The obverses of U.S. quarters from 1796-1930 depict Lady Liberty, while obverses of U.S. quarters from 1932 to date picture George Washington. The reverse of U.S. quarters from 1796-1998 bear images of the bald eagle, while the reverses of U.S. quarters since 1999 feature special designs honoring the 50 states, the 5 U.S. territories, the District of Columbia and National Parks. Quarter collectors are especially fond of the Statehood Quarter series that started in 1999. Pre-1965 Quarters are collected today for their silver content and their numismatic value.