The 1964 half dollar is a unique coin in the history of the United States. It was the last silver half dollar ever minted, and it was the last coin to feature the profile of President John F. Kennedy. The coin was minted in both 90% silver and 40% silver, with the 90% silver coins being the most valuable. The 1964 half dollar was minted in both proof and business strike versions. The proof coins were made with a special minting process that made them shinier and more detailed than the business strike coins. The proof coins were made for collectors, while the business strike coins were made for circulation. The 1964 half dollar is a popular coin among collectors. It is highly sought after due to its historical significance and its silver content. The 90% silver coins are especially valuable, with some coins selling for hundreds of dollars. The 40% silver coins are also valuable, but not as much as the 90% silver coins. The 1964 half dollar is a unique coin that is highly sought after by collectors. It is the last silver half dollar ever minted, and it is the last coin to feature the profile of President John F. Kennedy. The coin is valuable due to its silver content and its historical significance. If you have a 1964 half dollar, it is a great coin to add to your collection.