The John F. Kennedy half dollar is a coin that was first minted in 1964 to honor the 35th President of the United States, John F. Kennedy, who was assassinated in 1963. The coin features a profile of Kennedy on the obverse side and the Presidential Seal on the reverse. It was introduced as a replacement for the Franklin half dollar. Made primarily of copper and nickel, the Kennedy half dollar has a diameter of 30.61 mm and weighs 11.34 grams. While it was initially produced in large quantities, its circulation has decreased over the years, making it more of a collector's item today.