Potosi, Bolivia, cob 8 reales, Philip III, assayer not visible, Grade 4, vintage certificate. KM-10. 11.23 grams. Very heavily corroded all over but with hint of shield and cross still visible. With original 1983 Fisher tag and photo-certificate.Recovered from: Atocha, sunk in 1622 west of Key West, Florida
($150-$225)