Potosi, Bolivia, cob 8 reales, 1618 (T), Grade 1. S-P21; KM-10; Cal-925. 26.36 grams. Bold 18 of date, choice full shield and cross, full denomination o-VIII, nicely toned, minimal surface corrosion. With Fisher tag and certificate 170862. From: Atocha, sunk in 1622 west of Key West, Florida
($1000-1500)