Postumus, AE sestertius, Lyons. AD 259-268. 11.70 g.

IMP C POSTVMVS PF AVG, laureate, cuirassed bust left, 
raising right hand.
VIRTVS AVG, Soldier or Virtus standing right, holding spear and resting left hand on shield at his side, S-C across fields. 

RIC 184; Laffaille 107 (this coin).