Segovia, Spain, cob 4 reales, 1593 date (four digits) above denomination IIII to right, assayer oI above mintmark to left, very rare (unlisted). Cal-unl (Type 163). 13.60 grams. Full shield with bold oI assayer and aqueduct mintmark to left and 1593 above denomination to right, good full cross-and-tressure, VF with dark toning near edge.
Estimate: 300 - 450 USD