Seville, Spain, gold cob 2 escudos, 1597 date to right, assayer B below mintmark S and denomination II to left. Cal-797. 6.60 grams. XF with dark sediment in crevices making for great contrast. Significantly, the Calico listing says "assayer not visible," whereas this coin clearly shows a bold full S-II-B in addition to the bold date.
Estimate: $1250 - $2000