BOLIVIA. 8 Reales, 1776-PTS PR. Potosi Mint. Charles III. PCGS AU-58 Gold Shield. KM-55. Incredibly appealing and attractive, this near Mint example offers a mix of toning with a good deal of cobalt sprinkled in. Also evident are some hints of underlying luster throughout, with this pieces year playing an even more pivotal role in its desirability.