Watch List notes:

Potosi, Bolivia, cob 4 reales, 1651E, with two countermarks (very rare) on cross: arms and unidentified. S-P36; KM-17b; CT-unl. 11.54 grams. Full cross, off-center shield, no corrosion but some weak spots and edge-crack, nicely toned. From the Maravillas Research Collection of Countermarked Potosi Cobs, with Marex certificate and tag #0233. Recovered from: Maravillas, sunk in 1656 off Grand Bahama Island ($700-1000)