Thrace, Byzantion in alliance with Kalchedon Æ 26mm. 3rd century BC. Veiled head of Demeter to right; uncertain c/m to cheek / Poseidon seated to right, holding aphlaston and trident; ΒΥΞΑNT to right, ΚΑΛΧΑ to left. HGC 3.2, 1428. 12.38g, 26mm, 12h.
About Good Very Fine.
From the inventory of a UK dealer.