Potosi, Bolivia, cob 4 reales, Philip III, assayer not visible, Grade 3. KM-9. 7.26 grams. Most of shield and cross despite heavy corrosion and edge-loss, lightly toned all over. With Fisher tag and photo-certificate #141679.Recovered from: Atocha, sunk in 1622 west of Key West, Florida
($300-$450)