SELEUKID EMPIRE. Demetrios II Nikator. First reign, 146-138 BC. AR Tetradrachm (27 mm, 15.49 g). Seleukeia on the Tigris mint. Struck circa 145-July 141 BC. Diademed head right within fillet border / Tyche, holding scepter and cornucopia, seated left on throne supported by tritoness right; monogram in exergue. SC 1984.1; HGC 9, 967.