Roman Imperial
Gallienus (253-268 AD) Antioch
BI Antoninianus (22mm, 3.4g)
Obv: GALLIENVS AVG, radiate, draped and cuirassed bust to right.
Rev: P M TR P XV P P •, Neptune standing facing, head to left, foot on prow, holding trident; VIIC in exergue.
RIC V.1 603 (sole reign); MIR 1638a; RSC 849.