Image rights: wildwinds.com

Anonymous. Star. Silver denarius 21mm, 3.9 g. Rome, 206-195 BC. 

Head of Roma right, X behind head. 
The Dioscuri riding right, stars above their heads, star beneath the horses, ROMA in exergue. 

Crawford 113/1. Sydenham 263; RSC 20gg; Sear 39.