Watch List notes:

Potosi, Bolivia, cob 1/2 real, Philip II, assayer R (Ramos), tiny R to left, mintmark P to right. 1.49 grams. Scarce issue (often mistaken for earlier assayer Rincon but actually a good bit less common), with possible P/R to right (which would be unique), full monogram and cross, Fine+ with some light toning and very slightly bent.

Estimate: $70 - 100