Watch List notes:

Sicily, Messana. The Mamertinoi. 211-208 B.C. Æ pentonkion (27 mm, 12.13 g, 12 h). Laureate head of Ares left / Warrior standing left, holding spear and leading horse left; in left field, Π (denomination). BAR issue 24; CNS 25; HGC 2, 849. Green patina, some roughness. Good fine.