Watch List notes:

Potosi, Bolivia, cob 4 reales, Philip IV, assayer T, mounted cross-side out in 14K gold pendant with shackle bail. 22.20 grams total. Very attractive setting of a mostly round coin, perhaps lightly rounded on edge to fit the custom gold bezel, with three ornate prongs, cross and shield visible but cross side slightly off-center.

Estimate: $500 - $750