Gallienus, AE antoninianus, Rome mint, joint reign. 255-256 AD.

IMP CP LIC GALLIENVS PF AVG, radiate, cuirassed bust right.
LIBERALITAS AVGG, Liberalitas standing left, holding tessera 
and cornucopiae.

RIC V-1 (J) Rome 148.

AAH sale on ebay, 2003.