Seleukid Empire, Seleukos I Nikator, 312 - 281 BCrnSilver Tetradrachm, Uncertain Mint, 25mm, 17.20 gramsrnObverse: Head of Herakles right wearing lion skin headdress.rnReverse: Zeus enthroned left holding eagle and scepter, monogram in left field and under throne.rnPriceP164 // SC39.2 // HGC9,11a