You have a manually altered novelty item, known as a Magician's Coin, made by altering two normal coins and gluing the pieces back together, that sells regularly for a couple dollars. Use a magnifier and examine just inside the raised rim on both sides of the coin, looking for a seam where the pieces are joined, that can be on either side of the coin.
In some cases, a double die adds to the value of a coin but in other cases it does not. Whether or not the value increases by the presence of a double die is determined simply by the market demand for them. For this Kennedy half I find the value in uncirculated condition to be about $18.
Double headed novelty and Magician's coins have no numismatic value, but depending on the denomination an quality most are under $10.00.
It depends very much on the coin's date. Please check the questions "What is the value of a <date> Kennedy half dollar?". E.g. if your coin is from 1969, look for "What is the value of a 1969 Kennedy half dollar?".
Half a dollar
What is the value of this half dollar
If you check the back you'll find that you have a halfdollar. There has never been a US-issued Kennedy silver dollar.
the 1972 Kennedy half dollar is worth 50 cents in circulated condition, or about a dollar in uncirculated condition
A Mint State 1971 Kennedy has a retail value of $1.00-$2.00
Either not Kennedy or not a dollar. Please look at the denomination on the back.
Check that coin again. Kennedy wasn't put on the half dollar until 1964.
Sorry it only has face value.
A 1969 silver Kennedy half dollar is worth $5 inn perfect condition. The value of the silver is worth $2.87.
50 cents, just spend it.
Double headed novelty and Magician's coins have no numismatic value, but depending on the denomination an quality most are under $10.00
Kennedy is on the HALF dollar, not the silver dollar. 1964 is an extremely common date, currently worth about $11 for the silver.
The gold plating adds nothing to the value, it's just a half dollar.
A 2002-S silver proof Kennedy has an average retail value of $18.00.
No 1963 Kennedy half dollars exist. 1963 is the last year of the Franklin half dollar. 1964 is the first year for Kennedy.
It depends on what the grade is.