Watch List notes:

Potosi, Bolivia, cob 8 reales, 1645T. S-P30; KM-19a; CT-492. 26.26 grams. Prominently full crown above full but slightly doubled shield with clear mintmark-assayer and denomination dot-8-dot, good full cross with full date in the form of big numbers 16 and 5 and tiny number 4 (a punch designed for a 4R, as it appears the 4-punch for the 8R became unusable), Fine+ with contrasting toning, tiny hole at edge.

Estimate: $175 - 250