IONIA, Ephesos. Circa 390-325 BC. AR Tetradrachm (24mm, 15.20 g, 1h). Contemporary imitation. Dion, magistrate. Bee / Forepart of stag right, head left; palm tree to left, ΔIΩN to right. Unpublished in the standard references, but for other examples recently sold, see: CNG 102, lot 445, CNG E-406, lot 393, CNG E-405, lot 175, and CNG E-403, lot 180. Near VF, slightly off center on obverse.
There are no known official issues from Ephesos known with a magistrate named Dion.