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; ΒΥΞΑN to right, ΚΑΛΧΑ to left, monogram in inner right field. Schönert-Geiss 1271-5; SNG BM Black Sea 83 var. (legends); HGC 3.2, 1428. 9.50g, 26mm, 12h.
Near Extremely Fine.
From the inventory of a UK dealer.