Tetras

Agyrion, a Sikel settlement in the interior of Sicily near modern Agira, retained meaningful civic autonomy well into the fourth century despite Syracusan dominance over much of the island. The tetras — valued at three onkiai within the Sicilian bronze fractional system — was the practical small-change denomination of daily commerce in these inland communities, where silver rarely penetrated ordinary transactions.

Agyrion is notable as the birthplace of the historian Diodorus Siculus, though that connection postdates this coinage by roughly two centuries.