Please help with this silver Roman coin's ID. Possibly Septimius Severus, but found nothing that looks like it.
It's far too thick to be a denarius. Portrait could be Marcus Aurelius, Lucius Verus, Commodus, Septimius Severus. You might do an acsearchinfo search using "Zeus Nikephoros" as a term.
It doesn't look official. A bronze "limes" denarius (?) imitating Roma seated holding Victory. The COS in the left reverse field might narrow down the coin it's imitating.
Limes denarius imitating a type of Marcus Aurelius? Although your coin does in fact look more like bare-breasted Jupiter.
Looks like Marcus Aurelius. Possibly this AE-Tetrassarion? https://www.acsearch.info/search.html?term=marcus+aurelius+Zeus+Nikephoros&category=1-2&en=1&de=1&fr=1&it=1&es=1&ot=1&images=1&thesaurus=1&order=0¤cy=usd&company=
I'm with Bing - I think this is a provincial. That CO[L] on the reverse makes me think so, and the dumpy flan. I also think it looks more like Septimius Severus, but Provincial portraits can be tricky, so I've come to find.