Watch List notes:

Sicily, Messana, The Mamertinoi, 264-241 BC. Æ Unit (18mm, 5.29g, 12h). Helmeted head of Adranos l. R/ Hound standing r.; Φ above. BAR Issue 11; CNS I, 20; HGC 2, 880. Rare, brown tone, VF
Estimate: 30 GBP