Mexico City, Mexico, cob 8 reales, Philip IV, assayer D. S-M18a; KM-45. 27.08 grams. Very bold mintmark, shield, and denomination as o over o, good full cross, no corrosion, unevenly thick flan. Recovered from: "Lucayan Beach Wreck," sunk ca. 1628 off Grand Bahama Island
Estimate: 200 - 300 USD