Mexico City, Mexico, cob 8 reales, Philip III, assayer not visible. KM-44.3. 15.79 grams. Solid piece despite corrosion with bold partial shield and clear cross, steely gray-silver surfaces throughout with spots of golden toning. Recovered from: "Dry Tortugas Wreck," sunk ca. 1622 west of Key West, Florida
Estimate: 150 - 225 USD