Potosi, Bolivia, cob 8 reales, 165(1-2)E, with crowned-O countermark on cross. S-P36; KM-19b. 21.59 grams. Choice full shield and cross with most of countermark (scarce), toned fields, light surface corrosion on obverse only but with truncated edge. From the Maravillas Research Collection of Countermarked Potosi Cobs, with Marex certificate and tag #0459. Recovered from: Maravillas, sunk in 1656 off Grand Bahama Island ($300-450)