Watch List notes:

SPAIN: Felipe III, 1598-1621, AR 4 reales (13.65g) (16)20, KM-33, cob issue, with most of shield and all of cross visible, some of margins weakly struck, so mintmark is not visible, last two digits of date identifiable, flan roughly heart-shaped, VF, ex Charles Opitz Collection.

Estimate: 100-150 USD