Tetradrachm Eccaio Type

West Noricum, occupying the eastern Alps and the region roughly corresponding to modern Austria and Slovenia, produced a dense variety of Celtic silver coinages in the final centuries BC. The Eccaio type — identified by Kostial 148 — belongs to a cluster of issues attributed to tribes operating in this zone as Roman administrative pressure from the south intensified following the establishment of the client kingdom of Noricum around 170 BC. These coins circulated in a society increasingly entangled with Roman trade networks while maintaining distinctly indigenous monetary conventions.

The 10g weight standard reflects a degraded Macedonian tetradrachm tradition, filtered through generations of Celtic abstraction.