Triobol

Aegina was the earliest Greek state to strike coins on a wide commercial scale, and the Aeginetan weight standard — to which this triobol belongs — became the dominant trading currency across much of the Aegean and Peloponnese before Athens imposed its own standard by force. The island's silver came largely through trade with Egypt and the Levant rather than domestic mines, which made Aeginetan coinage as much a commercial artifact as a civic one.

Production of this type was interrupted, if not halted, by the Athenian-backed expulsion of the Aeginetan population in 431 BC — making pieces struck in this earlier window pre-conflict issues by several decades.