Chios in Ionia, magistrate Polianthos, 190-133 BC.,
Tetrachalkon / Æ 17 (15-16 mm / 3,88 g), bronze, medal alignment ↑↑ (ca. 0°),
Obv.: sphinx seated r., grain-ear in front.
Rev.: ΠOΛIANΘ[OΣ] / [X]IOΣ , legends flanking amphora.
Mavrogordato, Chronology of the Coins of Chios in NC 1916, p. 311, 62 AO (10 pieces listed) ; SNG Cop. 1588-89 .