Watch List notes:

MEXICO, Colonial. Carlos I, with Juana. King of Spain, 1516-1556. AR 4 Reales (33mm, 13.60 g, 7h). Late series. Ciudad de México (Mexico City) mint; Juan Guitiérez, assayer. Struck 1542-circa 1545. Crowned coat-of-arms; G M flanking / Crowned pillars of Hercules set on waves; denomination between. Ponterio, Coinage Late series, 1; Nesmith 46; BW –; Grove 49; ME 3102; SCM 18. Good VF, toned.