I'm guessing this is a Roman provincial? Nothing on the obverse except what to me looks like a late Roman looking bust and "KAP K(or R) IAN" - "O"? on the reverse and a standing figure. I can't even think of where to start on this one. 16mm, 3.2g
Marcianopolis of a younger looking emperor like Severus Alexander. If the first two images were as clear as the last two, we might have a chance.
OK. https://rpc.ashmus.ox.ac.uk/type/27716 seems to be the closest if we ignore the size/weight and the lack of a wheel at Nemesis' feet. So, Gordian III. Thanks!
I'm still on a Severan boy. Elagabalus? Severus Alexander? Perhaps Hygieia facing right holding snake?
My only source on the Roman provincials is RPC Online unfortunately and it doesn't show any for Elagabalus or Severus Alexander. Hygaeia's arms are bent as far as I'm seeing.
by weight AE Assarion of Markianopolis. Here are several candidates for reverse - I like this Commodus with tyche reverse, but I can't convince myself that the text looks like what you have on obverse. I do like @dougsmit's thought: Severus Alexander... Does not look Gordian to me... Doesn't look like Diadumenian either... .....
@dougsmit has correctly identified the reverse as Hygieia, the 3rd & 4th pics in the OP show it quite clearly. I agree that based on the Obverse image it is most likely Elagabalus or Sev Alexander as Doug said. Try Wildwinds if you are struggling.
Assuming OP size is right at 3.2g/16mm it is an unusual coin, whatever it is (and @dougsmit is always on target). I think I see a fairly clear "A" near forehead on obverse and I like "NOC" at the end of obverse legend better than "POC". Looking in Varbanov 1409 - Hygieia for Elagabalus is AE16 listed R3. Spacing would work out reasonably for ANTΩNIENOC. 1734 - Hygieia for Severus Alexander is AE20 listed R3. Spacing similar with an AΛ for AΛEΞANΔPOC in similar position and still 10 letters. Not much to go on - but both of these probably good candidates.