Watch List notes:

Potosi, Bolivia, cob 8 reales, Philip III, assayer T, Grade 1. S-P21; KM-10. 26.25 grams. Good full cross and shield (the latter doubled), full P+T, solid and uncorroded. With original Fisher photo-certificate #8515. Recovered from: Santa Margarita, sunk in 1622 west of Key West, Florida

Estimate: $400