Any chance to identify? [επιλυμένο]

A 9 mm radiatus(?), no readable inscription on the obverse. I put tbe reverse with the SC at 12. At 9 is an inscription with the letter O. No clue what the reverse represents.Too oxydated to be identified?

Thank you for your help

The reverse is probably a consecratio, with an eagle in the middle: https://en.numista.com/catalogue/index.php?e=rome&r=&st=1-2&cat=y&im1=&im2=&ru=&ie=&ca=3&no=&v=&a=&dg=215-301&i=*consecratio*&b=&m=&f=&t=&t2=&w=&mt=&u=&g=&k%5B%5D=64&c=&wi=&sw=

The obverse is the deified emperor, but without the lettering it's hard to tell which one.

Maybe the style of the eagle can help to narrow things down a bit. I'm not confident at all, but for me these are the closest ones:
N#291427
N#291428
N#291430

Check the link on the coin pages to the OCRE, on that page there are more examples of the given type:

For a 100% accurate ID, maybe. But for a generic ID, I got something in the search.

There are various billon antoninianus with radiate crown and eagle, text reverse CONSECRATIO.

Linking one just for example: N#291427 

Edit: Greg wrote the answer faster than me.