Valerian, AE Antoninianus, Rome. AD 256. 21mm, 4 g.

IMP C P LIC VALERIANVS P F AVG, radiate and draped bust right
PM TR P V COS IIII P P, Emperor seated left on curule chair, 
holding globe and sceptre

Goebl 0063c; RSC 166; not in RIC or Sear. 

With permission of cngcoins.com, auction 241, Lot 521, Sept. 2010.