Cn. Gellius.     AR Denarius, 138 BC.   Obv.    Helmeted head of Roma right, X behind, all within laurel-wreath.        Rev.   Mars and Nerio in quadriga right; below horses, CN. GE[L]; in exergue, ROMA.     Cr. 232/1; B.  1.     3.79 g.   19.00 mm.        A nice example with underlying luster.    About EF.