MEXICO. 8 Reales, 1771-Mo FM. Mexico City Mint. Charles III (1760-1788). PCGS Genuine--Tooled, EF Details. KM-105; Calico-1103. This example offers a light golden-gray patina and light, even wear. Light tooling marks are seen at the upper left of the "PLUS" pillar. Nonetheless, an attractive example of the type.