Watch List notes:

Sicily, the Mamertinoi Æ 16mm. Circa second century BC. Head of Ares to right, wearing Corinthian helmet / Kithara; [MAMEPTINΩN] to left, monogram to right. Buceti 36; Särström Series XV, Group E, 298-300; HGC 2, 886. 2.72g, 16mm, 4h.

Very Fine. Extremely Rare; seemingly no other examples on CoinArchives.

From the collection of a Scientist.