Watch List notes:

Potosi, Bolivia, cob 8 reales, 1645, assayer not visible. KM-19a. 26.78 grams. Broad flan with 100% full date (very rare thus, although partial-date examples are fairly common), bold full cross, full and well-detailed but slightly doubled shield, non-toned VF+ with peripheral flat spots.

Estimate: $300 - 450