The Kennedy half dollar was designed by Gilroy Roberts. It was first issued in 1964 as a tribute to President John F. Kennedy who was assassinated in 1963. They had to scramble to get a coin out quickly after his death and used the design that was intended to be used on a medal that would be a part of the mint’s presidential series. Frank Gasparro designed the seal on the reverse, and the coin was complete. It was 90% silver and was hoarded when it was first introduced because people wanted a momento of one of their favorite presidents.