Diadumenian AE25 of Nikopolis ad Istrum. Marus Claudius Agrippa, legate. 

KM OPELL ANTWNIN DIADOYMENIANOC, bare-headed, draped, cuirassed bust right.
YP AGRIPPA NIKOPOLITWN PROC ICT, Serpent-entwined staff 
of Asklepios. 

Varbanov 3647 (this coin).

With kind permission of Numismatik Lanz, Auction 2002.
Note: This image was recovered after having been destroyed 
in the March 2009 website attack. Recovered and re-added in 
October, 2011.