1965 40% Silver JFK Half Dollar Coin Pendant with 18in 925 Silver Chain Necklace ( F0421) This is an elegant and beautiful, custom made, authentic Silver Half Dollar pendant necklace with 18-inch silver chain. The silver half dollar coin pendant measures about 1 inch in diameter and it is made of 40% silver; the frame is made of nickel and comes with 925 chain. Other silver half dollar coin available is shown in the last photo. If you prefer other dates please contact me for availability.