Watch List notes:

Potosi, Bolivia, cob 8 reales, Philip III, assayer T, Grade 3. S-P21; KM-10. 19.49 grams. Very choice full cross, well-detailed shield despite moderate corrosion and edge-loss. With Fisher certificate #167711. Atocha, sunk in 1622 west of Key West, Florida

Estimate: $250-375