Hemiobol

Argilos was a Thasian colony on the Strymon river in Thrace, controlling access to the silver-rich hinterland that would later make nearby Amphipolis one of the most strategically contested cities in the Greek world. The town issued its own small silver coinage during a window of genuine commercial independence — before Athenian expansion up the Strymonian coast effectively absorbed its economic sphere in the 430s BC.

At 0.27 g, this hemiobol represents the smallest practical denomination in local exchange, almost certainly used in market transactions rather than tribute or inter-polis settlement.