Watch List notes:

Seville, Spain, cob 1/2 real, 1588 date to right, assayer Gothic D below mintmark S to left. CT-638. 1.60 grams. Broad flan with full but lightly pitted crown, monogram and cross-lions-castles, full mintmark-assayer and date (the latter partially weak but significant and popular as the year of the Spanish Armada, also first date of type), toned VF.

Estimate: $125-200