Watch List notes:

Potosi, Bolivia, cob 4 reales, Philip III, assayer Q, Grade 1. S-P17; KM-9; CT-243. 11.33 grams. Good full cross and shield, bold full P-Q, attractively toned, part of edge lost to corrosion but otherwise nice. With original Fisher photo-certificate #8353. Recovered from: Santa Margarita, sunk in 1622 west of Key West, Florida

Estimate: $350