Watch List notes:

Potosi, Bolivia, cob 4 reales, Philip III, assayer Q, quadrants of cross transposed (rare for this assayer), Grade 1. S-P17; KM-9 ;CT-243. 13.14 grams. Bold full cross and shield, full P-Q, minimal surface corrosion, elegant toning all over. With Fisher/Sinclair certificate #185693. Recovered from: Atocha, sunk in 1622 west of Key West, Florida

Estimate: $600 - 900