Octobol

Chalkis was one of the few cities on Euboia to maintain an active silver coinage into the second century BC, a period when Macedonian and later Roman political pressure was systematically dismantling the monetary independence of Greek poleis across the Aegean. The octobol denomination — eight obols, two-thirds of a drachm — was a peculiar choice, more common in bronze accounting than silver issue, and its adoption here likely reflects local commercial convention rather than alignment with any broader monetary league.

The city's coinage effectively ceased following Roman intervention after the sack of Corinth in 146 BC, which brought the region under direct Roman administrative control.