Watch List notes:

Potosi, Bolivia, cob 8 reales, (161)9T, Grade 1, with tag only (certificate missing). S-P21; KM-10; CT-133. 26.67 grams. Solid and uncorroded (rare for such an early find) but crudely struck, with clear full 9 of date, several areas of dark encrustation. With Fisher tag #1333. Santa Margarita, sunk in 1622 west of Key West, Florida

Estimate: $300-450