Watch List notes:

Islands off Ionia, Chios AR Tetradrachm. In the name and types of Alexander III of Macedon. Circa 210-190 BC. Diognetos, magistrate. Head of Herakles right, wearing lion skin headdress / Zeus Aëtophoros seated left, holding sceptre; AΛEΞANΔPOY to right, ΠO above sphinx seated left on overturned amphora in left field, ΔIOΓNHTOΣ in exergue. Price 2419 (same dies as illustration); Müller 1117; Bauslaugh, Posthumous, series 67. 16.69g, 32mm, 12h.

Good Very Fine, ex jewellery(?), light cabinet tone. Extremely Rare, only three other examples on CoinArchives.