253-268 AD. Alexandria mint. Obv: IMP LICIN GALLIENV legend with laureate, draped and cuirassed bust right. Rev: COL AVG legend with she-wolf standing right, suckling infants Romulus and Remus; [TRO?] in exergue. Bellinger A459; SNG München 138; SNG von Aulock 7576.3.52 grams. ("). Ex Roma Numismatics Ltd., E-Sale 40, 28 October 2017, lot 439. Gallienus was in his mid-30s when his father elevated him to the rank of co-emperor. His duty was to defend the norther frontier, which he did with a good deal of success, keeping the Empire's principal adversaries- the Alamanni and the Franks- at bay. He tried valiantly to hold the disintegrating Empire together and implementing key military reforms which laid the foundation of the Empire's recovery in later decades. Gallienus was arguably the crucial figure in Rome's resurgence. He was a cultured man, friends with the famed philosopher Plotinus, although the emperor was destined to devote the majority of his efforts to warfare. His coinage falls into two main periods- that of his joint reign with his father, and his sole rule thereafter. [No Reserve]