An uncirculated one could be $2, but that's probably not worth running to eBay for. Kennedy bicentennial half-dollar coins, minted in 1976 to commemorate the 200th birthday of the United States ...

The Kennedy half ... value is shown via its records. Attention to detail is important in the numismatics world, and this case is no different. Introductory strikes of the 1964 Kennedy half dollar ...