Potosi, Bolivia, cob 8 reales, 1651E, with crown-alone countermark (common variety) on shield. S-P36; KM-19b; CT-511. 20.26 grams. Very bold full countermark and date despite moderate corrosion, good full shield and cross, lightly toned all over. With Marex tag #91-8R-1196. Recovered from: Maravillas, sunk in 1656 off Grand Bahama Island (Estimate: $350 - 500)