Tetrobol

Therma, situated at the head of the Thermaic Gulf in Macedonia, was a Greek colonial city that would later be refounded by Cassander in 316 BC and renamed Thessaloniki. Its independent coinage predates that absorption entirely, placing this tetrobol among the earliest issues from a mint whose city would eventually become one of the most important in the ancient world. The SNG Ashmolean reference number suggests a single known specimen or near-unique attestation in major collections — Therma's issues are genuinely scarce.