From 1965 to 1967 no mint marks were put on any U.S. coins. They weren't restored until 1968 when the mints were able to catch up with demand for the then-new clad coinage.
Please check again and determine what you have, then post a new question. If the coin actually has an S mint mark it's been altered, so it would only be worth its silver content value, about $2.50 as of 11/2008.
The 1966 Kennedy half dollar is 40% silver and worth about $5.00.
A 1941 US half dollar in good condition is worth about $9. If it is in uncirculated condition, it would be worth about $26 to $40.
The value of a 1966 Kennedy half dollar is primarily determined by its condition and whether it is a regular circulation coin or a special collector's edition. In general, a typical 1966 Kennedy half dollar in circulated condition is worth face value, 50 cents, while uncirculated or proof versions can be worth several dollars. Additionally, if it is part of a special mint set, it may fetch a higher price among collectors. Always check current market trends for the most accurate valuation.
A 1860 Liberty Seated Half Dollar in good condition (G4) is worth: $250.00.
In average condition a 1936 Walking Liberty half dollar is valued at $18.00.
The 1966 Kennedy half dollar is 40% silver and worth about $5.00.
It depends on the year and condition, but it's worth at least half a dollar.
A 1941 US half dollar in good condition is worth about $9. If it is in uncirculated condition, it would be worth about $26 to $40.
the 1972 Kennedy half dollar is worth 50 cents in circulated condition, or about a dollar in uncirculated condition
About $2.00
The value of a 1966 Kennedy half dollar is primarily determined by its condition and whether it is a regular circulation coin or a special collector's edition. In general, a typical 1966 Kennedy half dollar in circulated condition is worth face value, 50 cents, while uncirculated or proof versions can be worth several dollars. Additionally, if it is part of a special mint set, it may fetch a higher price among collectors. Always check current market trends for the most accurate valuation.
A 1860 Liberty Seated Half Dollar in good condition (G4) is worth: $250.00.
It's currently worth about $4 for its silver content.
As of February 2018, it's worth about $2.50 for the silver.
The value of a US 1964 half dollar in circulated condition is around $10. in uncirculated condition they are worth around $16.
In average condition a 1936 Walking Liberty half dollar is valued at $18.00.
1962D Franklin Half Dollar: in very fine condition is worth $3.00, uncirculated is worth $7.00.