1928-S 50c Walking Liberty Half Dollar - PCGS F 15.  San Francisco mintage of 1,940,000 coins.  PCGS has only graded 73 in this population, with 1060 coins graded higher.  There have been no major auction appearances for this coin.  This is part of five PCGS Set Registry Collections:  Walking Liberty Half Dollars Basic Set, Circulation Strikes (1916-1947); Everyman Walking Liberty Half Dollars (1916-1947); Walking Liberty Half Dollars Early Date Set, Circulation Strikes (1916-1933);