Tetradrachm - Antiochos I Soter Seleukeia on the Tigris

Antiochos I inherited a kingdom already fracturing at the edges — his father Seleukos I was assassinated in 281 BC just months after defeating Lysimachos at Korupedion, leaving Antiochos to consolidate control over an empire stretching from Syria to Baktria. The Seleukeia on the Tigris mint was among the most productive in the empire, positioned near Babylon on a major trade artery, and its output during this reign reflects the administrative priority placed on maintaining coinage across the eastern satrapies.

The "Soter" epithet — Savior — was awarded by the Greeks of Asia Minor following his defense against the Galatian incursions of the 270s BC.