肯尼迪半美元
After the assassination of John F. Kennedy on November 22, 1963, Congress and the Mint moved with great speed to authorize and produce a half dollar in tribute to him. With the authorization of the Kennedy half dollar on December 30, 1963, the Franklin half dollar series came to an end. Breen reports rumors of 1964 Franklin half dollars, produced possibly as trial strikes to test 1964-dated dies, but none has ever come to light. A total of 465,814,455 Franklin half dollars were struck for circulation; in addition, 15,886,955 were struck in proof.