Greek. Sicily. Messana. The Mamertinoi. 288-278 BC. Onkia (Bronze, 18.00 mm, 5.19 g). Head of Ares left; behind neck, helmet. Rev. Bull charging right; above arrow-head; in ex. MAMEΡTINΩN. Särström, type b, 102-104. Calciati CNS I, 13. Virzì 1204. HGC 2, 878. Dark green patina. Good Very Fine. Very Rare.