Lot of two Potosi, Bolivia, cob 8 reales, Philip III, assayers not visible, Grade 4. KM-10. 26.52 grams total. Both heavily corroded with thin edges but recognizable features, lightly toned. With Fisher certificates #10241 and 10275. Recovered from: Santa Margarita, sunk in 1622 west of Key West, Florida (Estimate: $200 - 300)