Watch List notes:

THRACE, Byzantion. Alliance coinage with Kalchedon. Late 3rd-2nd centuries BC. Æ (26.5mm, 12.10 g, 11h). Wreathed and veiled head of Demeter right / Poseidon seated right, holding aphlaston and trident; no control marks. Schönert-Geiss, Byzantion 1276–82; Türkoğlu A2a; HGC 3, 1428. Brown surfaces, brush marks, short flan crack, minor doubling on reverse. VF.