Diadumenian AE28 of Nikopolis, Moesia Inferior. Magistrate Agrippa. 

Obv: K M OPEL DIADOUMENIANOC AV, draped bust right 
Rev: VP AGRIPPA NIKOPOLITWN PPOC ICTP, city gate with three crenulated towers.

Megaw NIC4.10a; AMNG I 1826 p.464; Varbanov (Eng.), 3637; Moushmov 1314

Courtesy of paxaugusti, November 2010.