Watch List notes:

The Collection of Roman Republican Coins of a Student and his Mentor Part III

The Bellum Sociale. Denarius, mint moving with C. Paapius (in Campania?) circa 90, AR 3.62 g. Helmeted and draped bust of Mars r., bowl decorated with plume; behind, viteliú in Oscan characters. Rev. Oath-taking scene: four soldiers, two on each side, pointing their swords at pig held by kneeling youth; in exergue, c.paapii.c retrograde in Oscan characters. Sydenham 637. Burnett, Essays Hersh, 4. Campana 84i (this coin). RBW 1225. Historia Numorum Italy 425.
Rare. Dark tone, an almost invisible area of corrosion at six o'clock on
reverse, otherwise about extremely fine
Ex M&M sale 52, 1975, 332.