Gallienus, 253-268. Antoninianus (Billon, 19 mm, 2.67 g, 6 h), irregular mint, imitating Cologne, after 259. GALLIENVS P F AVG Radiate and cuirassed bust of Gallienus to left, holding spear in his right hand and shield on his left shoulder. Rev. DEO MARTI Mars standing front within tetrastyle temple, head to left, placing his right hand on shield set on ground and holding inverted spear in his left. Cf. Cohen 150, MIR 889i and RIC 10 (for prototype). An attractive contemporary imitation. Slightly rough and with minor doubling on the reverse, otherwise, very fine.