Potosi, Bolivia, cob 8 reales, Philip III, assayer T, mintmark in retrograde over P, Grade 1. S-P21; KM-10. 26.48 grams. Curious "phi" mintmark (retrograde P over regular P) and clear assayer, good full shield and cross with weak spot in middle, virtually no corrosion. With Fisher photo-certificate #158716. Recovered from: Atocha, sunk in 1622 west of Key West, Florida (Estimate: $500 - 750)