Mexico City, Mexico, pillar 8 reales, Charles III, 1767/6 MF, rare, NGC XF 40. Yonaka-M8.67a; KM-105; Cal-1091. Light even toning with traces of underlying luster, earlier label (closer to AU by today's standards) that does not mention the weak but certain overdate.
Estimate: 500 - 750 USD