Mexico City, Mexico, cob 4 reales, (16)23/2D, rare. S-M18a; KM-38; CT-691. 12.33 grams. Full 3/2 of date, full mintmark, nearly full shield and cross, minimal corrosion, low-contrast toning. Recovered from: "Lucayan Beach wreck," sunk ca. 1628 off Grand Bahama Island
($300-450)