like I said..i only know i have had it a long time and it appears to be silver to me...the percentage of silver i don't know and for people that collect these coins they would know...and if they want it they will bid..Thanks
1965 - 1969 Kennedy Half Dollars are 40% silver. The 1964 Kennedy Half Dollars are 90% silver. In 1970, they changed the Kennedy Half Dollars to copper - nickel.