Stater

Among the earliest coinage produced anywhere in the world, electrum staters from uncertain Ionian mints belong to a period before civic identity was systematically stamped onto money. The attribution problem is genuine and unresolved — scholars have argued for Miletus, Ephesus, Phocaea, and Samos over decades without consensus, and the absence of legends means typology and metal analysis carry the entire burden of provenance.

The electrum itself was naturally occurring, sourced from the Pactolus river in Lydia, with gold-to-silver ratios varying unpredictably between individual pieces — a known source of fraud anxiety in antiquity that Herodotus directly references.