Tetradrachm - Alkimachos

Kos operated under Hecatomnid influence during the mid-fourth century, and the island's coinage of this period reflects the transitional political pressure between Carian dynastic control and the reassertion of local civic authority following the Social War. Alkimachos is identified as a magistrate responsible for this issue, one of relatively few named officials whose tenure can be approximately bracketed by the island's shifting allegiances.

The BMC Greek 12 reference places this among a small, well-documented group — Koan tetradrachms of any magistrate series are rarely encountered outside institutional collections.