Watch List notes:

Potosi, Bolivia, cob 4 reales, Philip II, assayer B (5th period), borders of x's, Grade-1 quality but Grade 3 on the certificate. S-P14; KM-4.3. 13.54 grams. Broad, round flan with choice full crown and shield, full but partially weak (and slightly doubled) cross, toned in crevices for bold contrast, minimal surface corrosion. With Fisher certificate #230329. Recovered from: Atocha, sunk in 1622 west of Key West, Florida ($300-450)