1964 Rare Kennedy 90% Silver Wow! Did You Know That 1964 Is The ONLY Year Kennedy Half Dollars Are 90% Silver?! When JFK Was Assassinated In 1963 The U.S. Mint Rushed To Make a Coin In His Honor. They Replaced The Franklin Half Dollar With A Kennedy Version In 1964. After 1964 Kennedy Half Dollars Were Made With 40% Silver Before Eventually Having No Silver At All. 1964 Is THE YEAR To Collect Kennedy Half Dollars If You Are Investing In U.S. Fine Silver! Check Out This Rare 1964 Kennedy Half Dollar In EXCELLENT Condition!