Watch List notes:

Cn. Carbo. 121 BC. AR Denarius (21mm, 3.88 g, 12h). Rome mint. Helmeted head of Roma right, curl on left shoulder; X (mark of value) to left / Jupiter driving galloping quadriga right, hurling thunderbolt and holding scepter and reins. Crawford 279/1; Sydenham 415; Papiria 7. VF.