Watch List notes:

Cn. Gellius. AR Denarius, 138 BC. Obv. Head of [Roma] right, X behind, all within laurel-wreath. Rev. Mars and Nerio in quadriga right, CN. GE[ ] below horses, ROMA in exergue. Cr. 232/1. AR. g. 3.84 mm. 18.50 Good metal and well centred, from fresh and detailed dies. Lightly toned. EF.