Watch List notes:

Potosi, Bolivia, cob 8 reales, 1727Y, Louis I (full LVIS), with sun-over-mountains countermark (Guatemala, Type II, 1839) on cross, very rare. S-P43b; KM-35; CT-26. 25.57 grams. Full and bold countermark with strong die-crack, full cross with bold 8 at top, P to left and Y to right, date below and king's name in legend (rare thus), full but weaker pillars with bold second date, About Fine with toned fields, holed at bottom of right pillar.

Estimate: $500-750