1: 1964: Introduction of Kennedy half dollar in honor of President John F. Kennedy.

2: 1970: Silver content reduced to 40% due to rising metal prices.

3: 1998: Kennedy half dollar comes in a special collector's set.

4: 2014: 50th anniversary of the Kennedy half dollar celebrated with special releases.

5: 2015: Design changes for the reverse side of the coin.

6: 2021: Release of new Kennedy half dollar reverse design honoring President Kennedy's legacy.

7: 5 Key Designs: Features of Kennedy half dollar from 1964 to present.

8: Collectibility: Factors influencing the value of Kennedy half dollars.

9: Conclusion: The enduring legacy of the Kennedy half dollar in American numismatic history.