Bithynia, Nicomedia, Trebonianus Gallus (251-253), Æ (Bronze, 23.3 mm, 5.07 g).
Obv. [Γ] ΒΙ ΤΡ[ΕΒΩ] ΓΑΛΛΟϹ ΑV, radiate, draped and cuirassed bust of Gallus to right.
Rev. Ν - ΙΚΟ - ΜΗΔΕΩΝ ΔΙ - Ν - ΕΩ - ΚΟΡΩ - Ν (MH, ΩΝ, ΩΝ ligate), Gallus, radiate, on horseback riding to left, raising right arm and holding transverse sceptre in left hand.
Ref: RPC online IX 351 var.