1879-S Liberty Head Half Eagle. AU-58 (PCGS). Keeping pace with the main coinage facility in Philadelphia, the San Francisco Mint also continued to increase half eagle production through 1879 with a delivery of 426,200 coins for the year. Although fairly plentiful in circulated grades, most AU examples offer neither the originality nor the visual appeal of the Fairmont-JBR specimen offered here. PCGS# 8350. NGC ID: 25X9. From the Fairmont Collection - JBR Set.