Spain. Phillip III, 1578-1621. 8 Reales ‘Cob’. Potosi Mint. Nuestra Senora De Atocha Shipwreck. With Mel Fisher Certificate. 16.2g.
 
Nuestra Señora de Atocha was a Spanish treasure galleon and the most widely known vessel of a fleet of ships that sank in a hurricane off the Florida Keys in 1622. After a 16-year search for the sunken 1622 Spanish galleon carrying vast gold, silver, and emeralds. The find significant treasure including coins were discovered by divers in 1985.
 
A brighter surface with marks consistent with shipwreck pieces.