Dating
263 CE (according to Göbl, MIR 36)
Obverse
GA[L]L[I]ENVS P F AVG, Bust of Gallienus, radiate, cuirassed, right, viewed from front
Reverse
P M TR P XII COS V P P, Serapis, wearing modius, draped, standing right, head left, raising right hand and holding long vertical sceptre in left hand