Watch List notes:

Sicily. Messana. The Mamertinoi. AE Pentonkion, c. 220-200 BC. Obv. Laureate head of Zeus right. Rev. ΜΑΜΕΡΤΙΝΩΝ. Helmeted warrior advancing right, holding spear and shield; Π to right. HGC 2 853; CNS I 40. AE. 11.71 g. 27.00 mm. R. Lovely untouched dark emerald green patina. About EF/Good VF.