No, the only Kennedy Half dollars after 1971 that are worth more than 50 cents are those found in proof or silver proof sets.
A 2002-S silver proof Kennedy has an average retail value of $18.00.
The silver proof 1997-S Kennedy half dollar has an current average value of $15.50.
A Proof version sells for $40.$50.00
About $15.00, retail.
A Kennedy Half Dollar that was minted in 2007 and carries a mint mark of "S," was produced in clad and silver. The clad in a proof state is worth: $4; in silver, the value is: $7.00.
It isn't silver. It is worth 50 cents unless it is a proof coin.
If the coin is a 1996-S Silver Proof Kennedy Half dollar, average retail value is $12.00 to $15.00
One 40% Kennedy half dollar contains .14792 oz of pure silver. The silver proof coins were struck on 90% silver planchets and contain .36169 troy ounces of silver.
1964 proof Kennedy halves are 90% silver, 68, 69, 70 proofs are 40%. The 3-piece Bicentennial silver proof & silver mint sets are 40% and 1992 to date silver sets are 90%.
No Kennedy half dollar dated 1973 was struck in silver, all are copper-nickel coins. Unless it's a proof coin, the value is 50 cents.
The Proof 1998s Silver Matte Finish $300.00 per Red Book.
The 1964 Kennedy half dollar, which is 90% silver, contains 0.3617 troy ounces of silver. The 1965-1970 Kennedy half dollars (as well as some 1976 coins issued for collectors), which are only 40% silver, contain 0.1479 troy ounces of silver. The silver proof Kennedy half dollars produced for collectors since 1992 are, like the 1964 coins, 90% silver and contain 0.3617 troy ounces of silver.