Thrace, Byzantion in alliance with Kalchedon Æ 26mm. 3rd century BC. Veiled head of Demeter to right / Poseidon seated to right, holding aphlaston and trident; ΒΥΞΑNT[I] to right, ΚΑΛΧΑΔ to left. Schönert-Geiss 1276-82; HGC 3.2, 1428. 9.55g, 25mm, 12h.
Near Extremely Fine.
From the inventory of a UK dealer.