Watch List notes:

Potosi, Bolivia, cob 4 reales, Philip III, assayer not visible, quadrants of cross transposed, Grade 3. KM-9. 11.22 grams. Crude edge (with small point) due to corrosion, full shield, bold king's ordinal III in legend, full but weaker cross with bold 62 of date (and no room for a final digit before ornament). With Fisher tag and photo-certificate #132630. Recovered from: Atocha, sunk in 1622 west of Key West, Florida

Estimate: $300-450