Seleukid Kingdom. Seleukos I Nikator. Silver Tetradrachm (17.2 g), 312-281 BC. Seleukeia on the Tigris, ca. 300-281 BC. Head of Herakles right, wearing lion's skin headdress. Reverse: BAΣIΛEΩΣ ΣEΛEYKOY, Zeus seated left, holding eagle and scepter; in left field, monogram; below throne, ΔI monogram. SC 117.16; HGC 9, 121. Untoned. Extremely Fine. Estimated Value $500 - 600