Gallienus, AE antoninianus. Rome. Joint reign. AD 258. 

GALLIENVS AVG, radiate, cuirassed bust right.
LEG XIII GEM VI P VI F, Victory walking right, lion
standing left at her feet. 

RIC V-1, Milan 360; Goebl 1017h; Sear 10271.
Scarce.

Image is from the Dalheim hoard catalog.