Valerian II, Caesar, 256-258. Antoninianus (Billon, 23 mm, 4.55 g, 7 h), Cologne, 257-258. VALERIANVS CAES Radiate and draped bust of Valerian II to right, seen from behind. Rev. PRINC IVVENTVTIS Valerian II, as prince of the youth, standing front in military attire, head to left, holding baton in his right hand and transverse spear in his left; to right, two standards. Cohen 66 ('Saloninus'). MIR 906e (two examples recorded). RIC 5. Extremely rare. Nicely toned and struck on a broad flan. Very light deposits, otherwise, good very fine.