Tetradrachm - Seleukos I Nikator Seleukia

Seleukos I founded his mint at Seleukeia-on-the-Tigris after retaking Babylon in 312 BC — the event from which the Seleucid Era itself is dated. That calendar, counting years from that reconquest, was still in use by some communities in the Near East well into the Christian period. SC 1.130 places this issue among the earlier Tigris mint productions, before the administrative machinery of the new empire had fully settled into the standardized fabric it would later impose across a territory stretching from Anatolia to Bactria.