Please determine what kind of coin it is?

Marcus aurelius / lucius verus ?

Libertas

Marcus, as ANTONINVS is legible on the left of the bust, (and AVG on the right) but I think Liberalitas rather than Libertas, LIB[ERAL AVG] V COS III.  There's a few options between 168 and 173 CE but the key part on the obverse which would separate them is illegible.

I cleaned it a little better, then I'll take better photos