Watch List notes:

Roman Republic. C. Gellius 138BC. AR Denarius. Rome mint. 18.5mm; 3.80g; 4h. A: Helmeted head of Roma right; X (mark of value) behind, all within laurel-wreath. R: Mars holding shield in Ieft hand and Nerio, quadriga right, CN• GE, below horses. ROMA in exergue. Crawford 232/1; Sydenham 434; Gellia 1. Very Fine

Estimate: 100 - 200 USD