Gallienus, 253-268. Antoninianus (Billon, 23 mm, 2.59 g, 6 h), Mediolanum, 261. GALLIENVS AVG Draped and cuirassed bust of Gallienus to left, wearing radiate and crested helmet and holding spear and shield. Rev. LEG VI[I C]L VII P VII F Bull standing right. Cohen 517. MIR 1007l (3 examples). RIC 350. Extremely rare. Struck from worn dies and somewhat porous, otherwise, about very fine.