Watch List notes:

Potosi, Bolivia, cob 4 reales, 1617M, Grade 1. S-P19; KM-9; CT-245. 12.79 grams. Bold date outside of full but slightly off-center cross, well-detailed full shield, practically no corrosion, silvery. Pedigreed to the Classics collection, with Fisher tag and photo-certificate #96A-20588. Recovered from: Atocha, sunk in 1622 west of Key West, Florida

Estimate: $800-1200