Diobol

Herakleia was founded jointly by Taras and Thurii around 433 BC, making the earliest issues from this mint nearly contemporary with the city's establishment. The political tension between those two founding powers — Sparta-descended Taras and Athenian-influenced Thurii — played out in the coinage itself, with early types showing competing iconographic influences before a more settled municipal identity emerged.

At just over a gram, this denomination circulated as a practical fractional piece in a region where Greek colonial trade demanded a full range of silver fractions.