Volusian (251-253) or Valerian (253-260) - Difficult to decide between the two Emperors
AE Bronze
Size: 21.8mm Weight: 5.05 grams
Obverse: [IMP CAE] RASLL[OVNAHIAC], radiate, draped and cuirassed bust of emperor to right.
Reverse: ANTIO - CHI C, vexillum surmounted by eagle between two standards, S R in exergue
Reference: SNG Paris 1294-96 var.