Valerian I (253-260).     AR Antoninianus, Rome mint, 256-257.   Obv.    IMP C P LIC VALERIANVS P F AVG. Radiate, draped and cuirassed bust right.        Rev.   APOLINI CONSERVA. Apollo, nude, standing left, holding laurel-branch in right hand and lyre set on rock with left hand.     RIC V 72.     3.5 g.   21.5 mm.          Good VF.