Diobol

Phokaia's coinage was among the earliest silver struck in Ionia, though the city was better known for its electrum issues — the silver series emerged partly as a practical response to the need for smaller commercial denominations that electrum's variable gold content made difficult to standardize. The date range here spans the period from just before to just after the Persian sack of 546 BC, which drove a significant portion of the Phokaian population to found Elea in southern Italy rather than submit to Harpagos.

Whether this specific diobol predates or postdates that exodus is unresolvable from type alone.