Watch List notes:

Mexico City, Mexico, cob 8 reales, Philip IV, assayer P. S-M19; KM-45. 25.03 grams. Round flan with full oMP and shield and cross despite flat areas and light surface corrosion, large patch of green and brown encrustation, toned all over. Concepcion, sunk in 1641 off Hispaniola

Estimate: $150-225