Silver denarius of Cn. Gellius, minted 138 BC, Rome mint, Roman Republic

Helmeted head of Roma right; mark of value behind; all within wreath / CN GEL, Mars driving galloping quadriga right, grasping Nerio beside him and holding shield, ROMA below. 20mm, 3.75 grams. Rome mint. Crawford 232/1; Sydenham 434; Gellia