Valerian II AR Antoninianus Valerianus II (256-258 AD). AR Antoninianus (19mm, 3.4 g), Samosata. Obv. VALERIANVS NOBIL CAES, Radiate, draped and cuirassed bust right, seen from rear. Rev. PRINC IVVENTVTIS, Emperor, in military dress, standing left, crowning trophy.