Keep your keys organized on the First Year of Issue Silver JFK Half Dollar Keychain. The JFK Half Dollar was first minted in 1964 of .900 silver. The silver coin displays the profile of President Kennedy on the obverse side and the presidential seal on the reverse. The silver half dollar is secure in a silvertone bezel attached to a silvertone keyring. The keychain measures 3 3/4 inches long. A Certificate of Authenticity is included.