Watch List notes:

Potosi, Bolivia, cob 8 reales, (1)650O, with crowned-dot-T-dot countermark on shield. S-P35; KM-19b; CT-509. 20.79 grams. Full but doubled shield with nearly full countermark, two assayers, the cross side corroded but with full cross and date still clear. With Marex tag #91-8R-1192. Maravillas, sunk in 1656 off Grand Bahama Island

Estimate: $300-450