Potosi, Bolivia, cob 8 reales, Philip III, assayer not visible, Grade 1. KM-10. 25.03 grams. Thick round flan with some surface corrosion, the cross and shield full otherwise, lightly toned. With original Fisher tag and certificate 85A-116234, pedigreed to the J.P. Silberman Estate.Recovered from: Atocha, sunk in 1622 west of Key West, Florida.