Roman Republic
M. Papirius Carbo (121 BC), Denarius 121 BC, mint Rome
Obverse: helmeted head of Roma to right, laurel branch to left, mark of value below chin
Reverse: Jupiter driving galloping quadriga to right, hurling thunderbolt and holding sceptre and reins, M•CARBO below, ROMA in exergue
Diameter 18 mm, weight 3.85 g