Potosi, Bolivia, cob 8 reales, Philip III, assayer Q, Grade 1. S-P17; KM-10; Cal-916. 25.22 grams. Choice full shield and cross with light toning and minimal surface corrosion. With Fisher tag and certificate 85A-144581. From: Atocha, sunk in 1622 west of Key West, Florida
($1000-1500)