Gallienus, 253-268. Antoninianus (Billon, 21 mm, 2.33 g, 1 h), Mediolanum, 262. GALLIENVS AVG Draped and cuirassed bust of Gallienus to left, wearing radiate and crested helmet and holding spear and shield. Rev. MARTI [PACIF]E Mars advancing to left, holding branch in his right hand and spear and shield in his left; in field to left, P. Cohen 612. MIR 1034o (4 examples). RIC 492. Very rare. Porous and with a thin flan crack, otherwise, very fine.