Watch List notes:

The Roman Republic

The Bellum Sociale. Denarius, Corfinium circa 90, AR 3.92 g. Laureate head of Italia l.; behind, ITALIA. Rev. Oath-taking scene: Eight soldiers, four on each side, pointing their swords at pig held by kneeling youth; in the background, standard. In exergue A. Sydenham 621. Campana 59. RBW 1214 (this coin). Historia Numorum Italy 408.
Rare and in exceptional condition for the issue, possibly the finest
specimen known. Virtually as struck and almost Fdc
Ex NAC -Spink Taisei 16 November 1994, Steinberg, 26; NAC 9, 1996, 640 and NAC 61, 2001, RBW part I, 1209 sales.