Gallienus, 253-268 AD. Silvered Bronze Antoninianus. (20.6 mm. 2,7 g.). Rome. GALLIENVS AVG, radiate head of Gallienus to right. Rev. MARTI PACIFERO, Mars walking left, holding olive branch, spear and shield. Officina letter H in left field. RIC V-1 (Sole reign), Rome 236. Extremely fine, sharply struck and fully silvered.