Potosi, Bolivia, cob 8 reales, Philip III, assayer not visible, Grade 4. KM-10. 14.91 grams. Heavily corroded all over, to the point that just a part of the cross is still visible. With Fisher tag and certificate #167167 (mis-attributed as a 4R).Recovered from: Atocha, sunk in 1622 west of Key West, Florida
($200-$300)