1960 NGC Proof 67 Silver Franklin Half Dollar, Gem PF 67,DSCF8681.JPG?fjkss=exp=,PF66 1960 Proof Franklin Half Dollar NGC Graded - White Coin,In Vivo Head-to-Head Comparison of [18F]GTP1 with [18F]MK,NGC Certified PR 69 Graded US Kennedy Half Dollars 1964-Now