Seville, Spain, cob 8 reales, 1593/2 date to right, assayer B below denomination o-VIII and mintmark S to left. Cal-737. 27.52 grams. Super full cross and shield, the latter with bold full S-oVIII-B to left and 1593 date to right (the 3/2 rather weak), lightly toned AU with traces of surface corrosion on reverse.
Estimate: $200 - $300