Gallienus (253-268) AE Antoninianus, (21mm, 4.21 g) Rome, 265-267 GALLIENVS AVG - Radiate head of Gallienus to right Rev: MARTI PACIFERO / A - Mars standing front, head to left, holding olive branch in his right hand and placing his left on shield set on ground; spear leaning against his left arm.