Sicily. Halykiai. AE Tetras, c. 390-370 BC. D/ Acheloios Mazaro as man-headed bull standing left. R/ Boar left; above, three pellets. Lazzarini, Monetazione, Series III, Em. 1. MSP I 28. CNS 45 (Himera?). HGC 2, 493 (Himeraia?). AE. g. 2.33 mm. 14.50 RR. Very rare and in excellent condition for issue. Blackish green patina. VF.