Watch List notes:

Potosi, Bolivia, cob 8 reales, 16(51-2)E, with two countermarks on shield (rare): crowned-C (rare) and crown alone (common variety). S-P36; KM-19b. 18.31 grams. Thin from heavy corrosion but with bold full countermarks on full shield, weak cross with bold 16 of date, edge-split, toned. From the Maravillas Research Collection of Countermarked Potosi Cobs, with Marex certificate and tag #0990. Recovered from: Maravillas, sunk in 1656 off Grand Bahama Island ($350-500)