Mexico City, Mexico, cob 8 reales, 162? D. S-M18a; KM-45. 25.84 grams. Solid piece with full shield, cross, and mintmark, much of date but last digit too messy to make out due to corrosion, interesting D/D assayer initial. Recovered from: "Lucayan Beach Wreck," sunk ca. 1628 off Grand Bahama Island
Estimate: 200 - 300 USD