Watch List notes:

Mexico City, Mexico, cob 4 reales, Philip IV, assayer not visible, ex-Maravillas (1656), mounted cross-side out in heavy sterling silver bezel with galleon embellishment on back, 14K gold prongs and shackle bail. 22.10 grams total. Bold full cross but periphery flat (other side not visible), light surface corrosion, light toning. From the Maravillas (1656), with Marex tag #91-4R-0659.

Estimate: $150-225