Watch List notes:

Potosi, Bolivia, cob 2 reales, Philip III, assayer Q, Grade 3. S-P17; KM-8; CT-353. 4.92 grams. Good full cross, crude and corroded shield with bold Q to left, toned in crevices. With Fisher photo-certificate #165608. Atocha, sunk in 1622 west of Key West, Florida

Estimate: $300-450