Watch List notes:

MEXICO, Colonial. Carlos I to Felipe II. King of Spain, 1516-1598. AR Real. Pillars and Waves type. Late series. Ciudad de México (Mexico City) mint; Luis Rodríguez, assayer. Struck 1548-1567. Crowned coat-of-arms; L M flanking / Crowned pillars of Hercules set on waves; PL VS VL across field; small pellet above VS. ME 3046. In NGC encapsulation graded AU 58.