Potosi, Bolivia, cob 8 reales, Philip III, assayer not visible, Grade 3. KM-10; Cal-Type 165. 15.74 grams. Smallish flan due to edge-corrosion, full but slightly doubled shield and cross, deeply toned. With original Fisher tag and photo-certificate 10123. From: Santa Margarita, sunk in 1622 west of Key West, Florida
($300-450)