Tetradrachm

Argilos was a Thasian colony on the Strymon River in Thrace, positioned to control trade routes into the silver-rich interior — a geographic advantage that explains why a settlement of its modest size was striking tetradrachms at all. The city later betrayed its Athenian colonists at Amphipolis to Brasidas in 424 BC, an act that effectively ended its independent political significance.

Issues attributable to this mint are rare enough that the Lockett specimen remained a primary reference point for decades.