Watch List notes:

Potosi, Bolivia, cob 4 reales, Philip II, assayer A, Grade 1. S-P11; KM-4.2; CT-346. 12.74 grams. Superb full shield and cross-lions-castles with light toning around details, bold P and clear A, minimal corrosion on small parts of edge only. Pedigreed to the Classics collection, with Fisher tag and photo-certificate #96A-270443. Recovered from: Atocha, sunk in 1622 west of Key West, Florida

Estimate: $800-1200