ROMAN EMPIRE. Gallienus, 253-268 AD. AR Antoninianus (3.99 gm; 22 mm). Rome, 257. IMP GALLIENVS P F AVG G M Radiate and cuirassed bust of Gallienus to right. Rev. PAX AVGG Pax standing front, head to left, holding branch in her right hand and scepter in her left; in field to right, T. Cohen 756; MIR 159k; RIC 157 var. (officina mark in field). Well centered. Choice EF and toned.