Watch List notes:

ATTICA, Athens. 87/6 BC. Æ Chalkous (17mm, 9.66 g, 12h). Mithradatic War issue. Struck under Mithradates VI of Pontos and Ariston. Helmeted head of Athena right / Zeus striding right, preparing to cast thunderbolt; to right, star within two crescents. Kroll 97; HGC 4, 1710. VF, dark brown surfaces.