Mexico City, Mexico, cob 4 reales, 1624/3/2 D, rare. S-M18a; KM-unl (38 for type); Cal-unl. 13.11 grams. Round flan with full but weak shield and cross, light surface corrosion, clear bottom part of Z4/3/Z of date. Recovered from: "Lucayan Beach Wreck," sunk ca. 1628 off Grand Bahama Island
Estimate: 250 - 375 USD