Watch List notes:

Potosi, Bolivia, cob 4 reales, Philip III, assayer not visible, quadrants of cross transposed, Grade 1. KM-9. 13.15 grams. Full shield with depression in center (as made), full but lightly corroded cross, light toning. With Fisher tag and certificate #159185. Recovered from: Atocha, sunk in 1622 west of Key West, Florida

Estimate: $600-900