Watch List notes:

Potosi, Bolivia, cob 4 reales, (165)1/0O (unique overdate), with crown-alone countermark (rare style) on cross. S-P35; KM-unl; CT-unl. 13.20 grams. Full but weak 1/0 overdate (first we have seen) outside full cross with full countermark (Ullian Type C), off-center shield, lightly toned and uncorroded, parts of edge slightly crude (as made). From the Maravillas Research Collection of Countermarked Potosi Cobs, with Marex certificate and tag #0336. Recovered from: Maravillas, sunk in 1656 off Grand Bahama Island ($1000-2000)