Remember that the eagle is considered to be one of the national symbols of the US.
The design on the back of the coin is an adaptation of the Presidential Seal.
Kennedy
John F. Kennedy
The 50 cent piece.
1964, the year after he was assassinated
About $5
on the dollar bill and on the 25 cent piece
So many were made most are valued only for the silver, about $5.00
There are no U.S. half dollars dated 1975.
It's still worth 50 cents.
It's just 50 cents, spend it.
1965-1970 Kennedy half dollars are 40% silver with a value of about $2.00 for the silver.
No. The US Mint did not issue any gold JFK 50 cent pieces.