I just acquired this Markianopolis, Moesia Inferior Assarion of Diadumenian. Once again, the condition is nothing special, but the reverse is what drew my attention. I have it attributed as Moushmov 629 struck 218AD:

OBV: M OPELLIOC ANTWNEINOC, bare-headed, draped bust right
REV: MARKIANOPOLEI-TWN, Lion walking left
I have found coins of Diadumenian to be difficult to find at affordable prices. This is only my second. The first is a Denarius in such bad shape one can only barely make out the identity of the young ruler.
NOTE: I am trying tinypic for the first time. It is very very easy to use and turns out just as good as posting the image directly. I'm impressed. Thanks DVC