,1776-1976 S Silver Washington Bicentennial Quarter NGC MS66, MS66 - PCGS Auction Prices,MS 66 Graded 1976 Kennedy US Half Dollars (1964-Now) for sale | eBay,1776-1976 S SILVER 50C MS | Coin Explorer | NGC,1776-1976 S SILVER 50C MS | Coin Explorer | NGC