Claudius II, aka Claudius Gothicus edit: IMP CLAVDIVS AVG, radiate head right / GENIVS AVG, Genius standing left, sacrificing from patera over altar and holding cornucopiae.
Thank you!! I was spending far too long going through photos of coins with bearded Emperors trying to narrow this down. I knew I would get an answer here very quickly.
Lol, no I wrote something about the portrait being weird, but a few seconds later realized I was thinking of Philip the Arab, not Claudius II. For some reason my mind always confuses the two.