Watch List notes:

Mexico City, Mexico, 4 reales, Charles-Joanna, "Late Series," assayer A to right, mintmark M to left (M-A), encapsulated NGC AU 50. Nesmith-58; CT-79; S-M6. 13 grams. Broad flan with full design, UNC details with light surface corrosion all over (net AU) as from unspecified salvage (probably "Golden Fleece" of ca. 1550). NGC #4427728-077.
($500-750)