Later-Denarius Coinage (ca. 154-41 BC) - Cn. Papirius Carbo - AR denarius (Rome 121 BC, 3.81 g) - Head of Roma right, wearing winged Phrygian helmet, X behind / Jupiter driving fast biga right, thunderbolt and scepter (Crawford 279/1 / Sydenham 415) - a.VF