BOLIVIA. Cob 8 Reales, ND (1598-1617)-P. Potosi Mint. Philip III. GOOD.
KM-10; Cal-type-164. Weight: 20.3 gms, from the Atocha shipwreck of 1622, sold with original flip-sized certificate from Treasure Salvors, Inc., coin number 86A-189991. A heavily saltwater damaged Cob, but with clear mintmark and with an assayer letter that could be a "B" or underlined "R".
Estimate: $600 - $900