Extremely Fine Spain Cob type Philip III silver 1/2 real coin.
Minted at Seville (S mintmark, Assayer B).
For cob types it is rare to encounter high grade, decently centered examples with a full and sharp date and nearly full legends.
Mintmark & assayer letter below monogram.
Certified by NGC to XF 40, Population Census: This coin, none higher.
Coinage type used in American colonies.