Potosi, Bolivia, cob 8 reales, 1617 (M), Grade 3. S-P19; KM-10; Cal-921. 16.01 grams. Choice full cross with bold full date, full but corroded shield, some edge loss, toned in crevices. With Fisher tag and certificate 85A-202356. From: Atocha, sunk in 1622 west of Key West, Florida
($500-750)