Hello! That's a great question about a very popular and historically significant coin.
While the provided search results from Greysheet and NGC Coin confirm that these are excellent resources for coin values, the specific text snippets don't contain the actual price data. Based on general numismatic knowledge, I can certainly help you understand the value of your 1964 Kennedy half dollar.
The 1964 Kennedy half dollar is unique because it's the only year in the series made of 90% silver. This gives it a high base value based on its silver content alone. This is often called its "melt value," which fluctuates daily with the spot price of silver. Typically, this means a common, circulated 1964 half dollar is worth around $9 to $12.
However, the value can be higher for collectors depending on its condition and origin. An uncirculated coin that has never been used as money and still has its original mint luster will be worth more, often in the $15 to $20 range or higher. If the coin is in near-perfect condition and professionally graded, its value can climb significantly, sometimes into the hundreds of dollars for the very finest examples.
There are also special "proof" versions of the 1964 half dollar made for collectors, which have a beautiful, mirror-like finish. These are also 90% silver and typically carry a premium over the standard uncirculated coins. A particularly rare variety to look for on the proof coin is the "Accented Hair" variety, which can be worth a substantial amount to collectors.
In short, the value of a standard 1964 Kennedy half dollar is primarily tied to its silver content, but a coin in excellent, uncirculated condition or a rare variety can be worth much more to a collector.
