Valerian I, AR Antoninianus, Antioch mint. 

IMP VALERIANVS AVG, radiate, draped bust right. 
P M TR P V COS IIII P P, Valerian and Gallienus standing
facing each other, resting hands on shields between them,
two spears behind. 

RIC 277; RSC 169; Goebl 1598a.