Diadumenian, Deultum, AE 24. 

C M OPEL ANTONINVS DIADV, draped bust right, seen from behind

CL FL PAC D/EVLT, Diadumenian on horseback right, raising right hand. 

Varbanov 2176 var. Not in Megaw, Varbanov or Moushmov

Contributed by Doug Spangle, Feb. 2010