Well now, that's a question with more layers than a forgotten wedding cake. Asking what a half dollar is worth is like asking how much a car costs. Is it a shiny new sports car or a clunker from 1982? The value of your half dollar depends entirely on its age, what it's made of, and its condition.
Most modern Kennedy half dollars jingling in pockets, those made from 1971 onward, are worth exactly what they say they are: a respectable fifty cents. They're made of a copper-nickel clad and aren't particularly rare.
But this is where the treasure hunt begins. If you find a Kennedy half dollar dated between 1965 and 1970, you're holding a coin that's 40% silver, making it worth a few dollars just for its metal content. The real prize in the Kennedy family is the 1964 edition, which is a whopping 90% silver and carries both metallic and numismatic value. Venture further back in time to the Franklin or Walking Liberty half dollars, and you're almost guaranteed to have a coin made of 90% silver, making its base value tied to the fluctuating price of silver.
As the provided Greysheet source implies, there are countless different "issues" of the half dollar, and some rare dates or mint marks can be worth hundreds or even thousands of dollars to a collector. So, the short answer is to check the date. If it's from before 1965, it's worth much more than two quarters. If it's a recent one, it's likely just worth two quarters.
