*AAH* Gallienus Billon Ant "Two Emperors" Gallienus AD 253-268 Billon Antoninianus
Obv: IMP C P LIC GALLIENVS PF AVG - Radiate bust right, draped and cuirassed Rev: PIETAS AVGG - Valerian and Gallienus facing each other, an altar between them; both are sacrificing Antioch mint AD 255-256 (joint reign) = RIC Vi, 447C, page 103 - Cohen 378/3.55g.