Watch List notes:

Mexico City, Mexico, 4 reales, Charles-Joanna, "Late Series," assayer G to right, mintmark M to left. Nesmith 50e type; S-M5a. 13.55 grams. Broad flan with choice full details (very slightly off-center), darkly toned, minimal surface corrosion. Recovered from: "Golden Fleece wreck," sunk ca. 1550 in the northern Caribbean

Estimate: $300 - 450