Diadumenian AE27 of Nikopolis ad Istrum.

K M OPPEL ANTWNIN DIADOYMENIANOC, bare-headed, draped, cuirassed bust right.
YP AGRIPPA NIKOPO-LITWN PRO-C ICTRWN, Nike standing right,
inscribing shield by trophy with two captives below; to
right, the emperor standing left, holding spear, right
hand on the trophy.

Varbanov 3688 (this coin); AMNG 1822; Moushmov 1355.

With kind permission of H.D. Rauch, auction 2004.