Watch List notes:

Bolivia, Philip III (1598-1621), 'Nuestra Señora Atocha' 4 Reales, Potosi, crowned shields, rev. arms, 17.93g, in 14 carat mount, with heavily pitted surfaces from water corrosion, the date and assayer not legibile, thus fair and mounted, with Appraisal Cerficiate.
provenance
Appraisal Certificate, dated 14th June 2018
Mel Fisher's Treasures, L.L.C Certificate of Authenticity coin recovered from the Nuestra Señora de Atocha' 1622, dated 15th June 2018
Estimate: £1600 - £1800