Watch List notes:

Potosi, Bolivia, cob 4 reales, Philip II, assayer B/L (2nd period), Grade 1, ex-Hebert. S-P6; KM-4.2. 13.01 grams. Choice full shield with elegant details, clear P-B/L to left, full but weaker cross-and-tressure, attractively toned, no corrosion. With Fisher photo-certificate #H-1978 (Hebert collection). Recovered from: Atocha, sunk in 1622 west of Key West, Florida

Estimate: $700-1000