Watch List notes:

Potosi, Bolivia, cob 4 reales, Philip IV, assayer T/P (ca. 1628), rare. S-P24; KM-17a. 13.60 grams. Bold full cross-lions-castles, nearly full shield with full and clear dot-P-T/P-dot to left, non-toned XF.

Estimate: $200 - $300