Potosi, Bolivia, cob 8 reales, Philip III, assayer not visible, 12 points (Grade 3), hand-signed certificate from 1976. KM-10. 18.19 grams. Full shield and cross despite moderate to heavy corrosion, dark-brown encrustation (not fully cleaned), desirable as pre-"Mother Lode" find. With original hand-signed Fisher certificate #3954 from 1976 (Cape Coral Bank). Recovered from: Atocha, sunk in 1622 west of Key West, Florida
Estimate: $350-500