Potosi, Bolivia, cob 8 reales, Philip III, assayer curved-leg R, Grade 2. S-P15; KM-10; Cal-912. 17.39 grams. Full shield and cross despite light to moderate corrosion and edge loss, somewhat silvery. With Fisher tag and photo-certificate 85A-138066. From: Atocha, sunk in 1622 west of Key West, Florida
($500-750)