Trebonianus Gallus AE29 of Neocaesarea, Pontus. Dated CY 188 = 251-212 AD. 

AVT KAI GALLOC CEB, laureate, draped and cuirassed bust right.
RW-MH PP-H, Roma Nikephorus seated left on circular shield, 
holding Nike and spear.

RecGen 60; Çizmeli 375e (this coin); SNG von Aulock 6766. 

With permission of cngcoins.com, May 2013