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 53. Nesmith-58 type; CT-79; S-M6. 12.9 grams. Broad flan with choice details, light toning and underlying luster. From the "Golden Fleece" wreck (ca. 1550). (Estimate: $600 - 900)