Trajan Decius (249-251) AR Antoninianus (Silver, 3.69g, 22mm) Rome, 249-251.
Obv: IMP C M Q TRAIANVS DECIVS AVG, radiate and cuirassed bust right
Rev: GENIVS EXERCITVS ILLVRICIANI, Genius of the armies of Illyricum standing left, wearing polos, holding patera and cornucopiae; standard to right.
Ref: RIC 16c