Watch List notes:

The Bellum Sociale, Denarius, mint moving with C. Paapius (in Campania ?), c. 90 BC; AR (g 3,99; mm 22; h 12); Helmeted and draped bust of Mars r.; behind, X and Viteliú (in Oscan characters), Rv. Oath-taking scene: four soldiers, two on each side, pointing their swords at pig held by kneeling youth; in ex. C. Paapii. C. (retrograde, and in Oscan characters). Sydenham 637; Campana 83.
Rare, die shift on obverse, cabinet tone: extremely fine.