Watch List notes:

Potosi, Bolivia, cob 4 reales, Philip II, assayer B (5th period), border of x's on reverse only. S-P14; KM-4.3. 13.44 grams. Well-detailed full shield and cross, the former with strange extra metal at top and the latter with slight doubling, VF with hint of toning.

Estimate: $125 - 200