Potosi, Bolivia, cob 8 reales, Philip III, assayer not visible, Grade 4. KM-10. 6.50 grams. Corroded and thin along the edges, some bold shield detail while cross side is weak, some dark encrustation spots. With original Fisher certificate 4775 (tag missing). Recovered from: Santa Margarita, sunk in 1622 west of Key West, Florida
Estimate: 250 - 375 USD