Seleukid Kingdom. Seleukos I, Nikator, 312-281 BC. AR Tetradrachm (16.80 g). Helmeted bust of hero right, assimilating Dionysus, Alexander, and Seleukos, wearing helmet covered with panther skin and adorned with bull’s horn and ear, panther skin tied around neck. Reverse: Nike standing right, crowning trophy of arms. SC 174.3. Head of Seleucus I right, wearing helmet covered with panther skin ...