Watch List notes:

Potosi, Bolivia, cob 4 reales, Philip III, assayer T, Grade 3. S-P21; KM-9. 7.57 grams. Bold full cross and shield despite moderate corrosion and some loss on edge, nicely toned. With original Fisher tag and certificate 86A-190042, pedigreed to the J.P. Silberman Estate.Recovered from: Atocha, sunk in 1622 west of Key West, Florida.

Estimate: $500 - $750