Lot of two Potosi, Bolivia, cob 8 reales, Philip III, assayers not visible, Grade-2 or -3 quality but Grade 4 on the certificates. KM-10. 46.02 grams total. One with decent full shield and cross and the other with choice full cross, both with moderate corrosion. With Fisher certificates #149563 and 166670. SEE INTERNET FOR PHOTO. Recovered from: Atocha, sunk in 1622 west of Key West, Florida (Estimate: $300 - 450)