Watch List notes:

Potosi, Bolivia, cob 8 reales, 1650/9 (rare overdate), early-style date, assayer O, with crowned-Z countermark (very rare) on cross. S-P35; KM-unl.; CT-unl. 25.18 grams. Very bold date with clear 0/9 (but not 5/4), full countermark, good full shield and cross, no corrosion but some "horn" silver on surface and small part of edge lost. From the Maravillas Research Collection of Countermarked Potosi Cobs, with Marex certificate and tag #1250. Recovered from: Maravillas, sunk in 1656 off Grand Bahama Island ($1000-1500)