Watch List notes:

Potosi, Bolivia, cob 1/2 real, (1652), transitional type with monogram superimposed over cross, rare. S-P37. 0.78 gram. Full monogram superimposed over a cross below crown, full cross-lions-castles on other side, deeply toned AVF. Note: This design was formerly attributed to 1656 only, but research by Roberto Mastalir shows that this version without dots was made in 1652.

Estimate: $70 - 100