257-258 AD., Gallienus, Colonia mint, Antoninianus, Zschucke 76.

Gallienus, Colonia (Köln, Cologne) mint, emission 5, 257-258 AD.,
Antoninianus (20-22 mm / 3,62 g),
Obv.: GALLIENVS P F AVG , radiate and cuirassed bust of Gallienus right.
Rev.: GERMANICVS MAX V , two captives seated at the foot of a trophy, their arms tied behind their backs.
RIC 18 ; Coh. 308 ; Göbl (MIR) 872d ; Zschucke 76 (R) .

Entrusted with the defence of the Rhine frontier by Valerian I in A.D.254, and having achieved considerable success against the German tribes, Gallienus struck this coin to commemorate the fifth repetition of the event.