Valerian, Bi. Antoninianus. Rome mint. AD 255-256.

IMP C P LIC VALERIANVS PF AVG, radiate, draped and cuirassed bust right.
VIRTVS AVGG, Virtus or Mars, helmeted and in military
dress, walking right, holding transverse spear, trophy over shoulder.

RIC V-1 137; Cohen 267; Goebl 84c.
Rare.

This image is from the Goebl plate (Vienna 18952).