Trajanus Decius (249-251 AD. Rome. AE Sestertiur 28mm; 15.5g. 

Obv: IMP C M Q TRAIANVS DECIVS AVG, laureate, cuirassed bust 
right, seen from the back

Rev: GENIVS EXERC ILLVRICIANI, S-C, Genius, naked, polos 
on head, standing facing, head left, holding patera, 
cornucopiae, standard to right.

RIC IVc 117a.

Contributed by Ars-Aeterna / David Suter, Switzerland, December, 2009