Tetradrachm - Darius Seleucia

Media Atropatene — the rump kingdom carved from the northwestern corner of the old Median satrapy after Alexander's death — spent much of the first century BC oscillating between Parthian suzerainty and uneasy autonomy. The ruler named Darius attested by this series is known almost exclusively through his coinage; no literary source names him with any confidence, and the chronology of his reign is reconstructed largely from hoard evidence and die studies.

Sellwood 37 places this issue within a sequence that shows progressive stylistic degradation, suggesting a mint working under pressure or with deteriorating supervision rather than a stable royal court at full capacity.