THRACE. Byzantion. Ae (3rd century BC). Alliance issue with Kalchedon.
Obv: Veiled head of Demeter right, wearing grain wreath.
Rev: BYZAN / KAΛXAΔ.
Poseidon seated right on rocks, holding aphlaston and trident; monogram to inner right.
SNG BM Black Sea 82-3 var. (monogram); HGC 3.2, 1428.
Condition: Very fine.
Weight: 10.58 g.
Diameter: 24 mm.