Dichalkon

Olosson was a minor polis of the Thessalian Perrhaebian region, and its bronze coinage is rare enough that the entire series can be reconstructed from a handful of auction appearances — most of them traceable to the BCD collection itself, the most comprehensive private Thessalian holding ever assembled. The city disappears from historical record entirely by the Hellenistic period, leaving no literary source to explain when or why it ceased issuing.