Silver antoninianus, 21mm, 3.99gm, issued AD 251/252. Rome mint.
Obv: IMP CAE C VIB VOLVSIANO AVG, Radiate, draped bust facing right.
Rev: VIRTVS AVGG, Virtus standing right resting on shield and holding spear.
References: Sear 9778, RIC 186, RSC 135.