Hemiobol

Trieros was a small settlement in ancient Thrace or Macedonia — the exact attribution remains contested among specialists — and its coinage output was minimal by any measure. The hemiobol denomination itself, a half-obol, was the workhorse of everyday petty transactions in the Greek world, changing hands for single portions of food or modest ferry crossings. Very few issuing authorities of this size produced silver at such a small fractional denomination, which makes the Trieros series notable less for its artistry than for the economic ambition it implies.