ROMAN REPUBLIC, Cn. Gellius, as Triumvir Monetalis (moneyer), Silver Denarius (3.60g, 20mm), Rome mint 138 BC. Obv. Head of Roma right, wearing winged Attic helmet, "X" (mark of value) to left, all within laurel wreath. Rev. Mars, in full military attire, commands quadriga right, Nerio stands on the left, "CN· GEL" and "ROMA" in linear frame below. Crawford 232/1; Sydenham 434. Struck on a broad flan, visually bold with obverse wreath, some roughness else good Very Fine.