Watch List notes:

THRACE, Byzantion. Mid 4th-3rd centuries BC. Æ (15mm, 2.98 g, 1h). Head of bull facing slightly left / Ornate trident. Schönert-Geiss, Byzantion 914–6 var. (unlisted dies); HGC 3.2, 1422 (this coin illustrated). VF, dark green patina, some roughness. Very rare.

From the Belgica Collection. Ex Helios 8 (13 October 2012), lot 169.