Watch List notes:

Potosi, Bolivia, cob 8 reales, (1651) O, with two countermarks (rare): crown alone (common) on shield and arms on cross. S-P35; KM-19b; Cal-1489. 25.35 grams. Broad flan with minimal corrosion (localized to part of edge) but somewhat weakly struck, with full shield and cross-and-tressure, clear P-O to left and 8-O to right, both countermarks clear (the crown alone bold and nearly full), light toning on fields. With original MAREX tag 91-8R-0271. From: Maravillas, sunk in 1656 off Grand Bahama Island
($350-500)