Kennedy Half Dollars

The Kennedy Half Dollar was struck in 90% silver in 1964. The following year, this was changed to silver-clad, with the silver content lowered to 40%. In 1971, the circulation coinage composition was changed a final time, eliminating the silver, and using the copper-nickel clad standard common to the dollar, quarter, and dime. Bicentennial Kennedy Half Dollars dated 1776-1976 were produced in the years 1975 and 1976 in the copper-nickel clad composition for circulation and proof and also in the 40% silver composition in uncirculated and proof versions for inclusion in special collector sets. When the United States Mint started producing silver proof sets in 1992, the Kennedy Half Dollar included in them had the same composition as the coins of 1964.