Trajan Decius, AR Antoninianus, 23.8 mm, 3.32 g. AD 249-251. 

IMP TRAIANVS DECIVS AVG, radiate, draped and cuirassed bust right.
GENIVS EXERCITVS ILLVRICIANI Genius, polos on head, standing left, holding patera and cornucopiae, standard to right.

RIC 4b; Cohen 63; Sear -. 

With permission of Gemini auction XIII, Lot 284, April 2017.