Potosi, Bolivia, cob 4 reales, Philip III, assayer Q, Grade 2. S-P17; KM-9; CT-243. 12.00 grams. Good full shield and cross, clear P-Q and denomination, light surface corrosion only. With Fisher photo-certificate #206532. Recovered from: Atocha, sunk in 1622 west of Key West, Florida
Estimate: $300 - 450