Bithynia, Nicaea AE (Bronze, 5.46g, 22mm) Gallienus (253-268)
Obv: ΠOV ΛI EΓ ΓAΛΛIHNOC CEB, Radiate, draped and cuirassed bust right.
Rev: APICTΩN / MEΓ / NIKAIEΩN, View of city walls in shape of octagon, seen from aerial perspective; arched central gateways above and below.
Ref: RG 847; Price & Trell 293 (fig. 190).