Watch List notes:

Potosi, Bolivia, cob 2 reales, Philip II, assayer not visible (style of 3rd-period B), Grade 3. S-P10; KM-3.2; CT-509. 2.16 grams. Thin from corrosion (also part of edge missing) but with choice full cross, good toning all over. With Fisher photo-certificate #240530. Atocha, sunk in 1622 west of Key West, Florida

Estimate: $300-450