Mamertini, Messana, Sicily, AE15 Uncia. 220-200 BC. 2.02 g.

Laureate head of Apollo right.
MAMERTINWN, Athena walking right, holding spear and 
pushing a shield before her.

Calciati 31; Hoover HGC 883; Sarström 255-260. 

With permission of Numismatica Ars Classica, May 2005.
Estimate: CHF 350.