Cn. Gellius. AR Denarius, 138 BC. D/ Helmeted head of Roma right, X behind, all within laurel-wreath. R/ Mars and Nerio in quadriga right; below horses, CN. GEL; in exergue, ROMA. Cr. 232/1. B.1. AR. g. 3.92 mm. 19.50 Great metal and full weight. An outstanding example, well centred on a broad flan, brilliant and superb. Enchanting iridescent tone. Good EF/EF.