Please turn the coin over and check the denomination on the back. You'll find that it's a HALF dollar. There's more information at the Related Question.
It's been altered after it left the Mint. Face value only.
Either not Kennedy or not a dollar. Please look at the denomination on the back.
The "P" Mint mark was not used on half dollars until 1980, it's only a half dollar so spend it.
Check that coin again. Kennedy wasn't put on the half dollar until 1964.
Sorry it only has face value.
A Mint State 1971 Kennedy has a retail value of $1.00-$2.00
the 1972 Kennedy half dollar is worth 50 cents in circulated condition, or about a dollar in uncirculated condition
A 1969 silver Kennedy half dollar is worth $5 inn perfect condition. The value of the silver is worth $2.87.
It's been altered after it was minted. No extra value.
.50
50 cents.
A 2002-S silver proof Kennedy has an average retail value of $18.00.