Watch List notes:

Potosi, Bolivia, cob 4 reales, Philip III, assayer Q, Grade 1. S-P17; KM-9; Cal-770. 12.78 grams. Broad, odd-shaped flan with good full shield (the cross also full but weaker), clear P-Q, very light surface corrosion only, a bit silvery. With original Fisher tag and certificate 85A-159309, pedigreed to the J.P. Silberman Estate.Recovered from: Atocha, sunk in 1622 west of Key West, Florida.

Estimate: $1000 - $1500