Mamertini, Messana, Sicily, AE dichalkon. 278-275 BC. 11 g. 

Head of Herakles left, wearing lionskin headdress.
MAMERTINWN, eagle standing right on thunderbolt, wings 
spread, coiled serpent in right field. 

Calciati 19; Hoover HGC 867; SNG ANS 417; Särström 125–136.