Hello there! That's a great question, as the value of a silver Kennedy half dollar really depends on its year. The term "silver" can apply to a few different versions of this coin.
The most valuable Kennedy half dollars in terms of silver content are from 1964. These coins are made of 90% silver, and their base value is tied directly to the current spot price of silver. This is often called their "melt value." As the provided search results suggest, price guides like Greysheet track the collector value, which can be higher than the melt value for coins in excellent, uncirculated condition.
From 1965 to 1970, the composition changed. These Kennedy half dollars are 40% silver, so while they are still valuable for their silver content, their melt value is significantly lower than the 1964 coins. Again, their base price fluctuates with the silver market, but high-grade examples can command a premium from collectors.
After 1970, most Kennedy half dollars intended for circulation were made of a copper-nickel alloy and contain no silver, making them worth their face value of 50 cents. The exception would be special silver proof sets and other collector issues released by the U.S. Mint in the following years.
So, in a nutshell, the first step to finding your coin's value is to check the date. A 1964 half dollar will be worth the most due to its high silver content, followed by the 1965-1970 coins.
