Trajan Decius AR Antoninianus. Rome mint, 249 AD. 

Obv: IMP TRAIANVS DECIVS AVG, radiate, draped & cuirassed bust right 
Rev: GENIVS EXERC ILLVRICIANI, Genius standing left, holding 
patera and cornucopiae; standard in right field.

RIC 4, RSC 63.

Contributed by Roma Numismatics, Dec. 2014