I can't read the inscription on that but judging by the style I'd put it closer to 150 AD. If you can get it in focus I think I can do better.
A couple years ago @
noglider sent me photos of some Roman coins a friend of his found in a New Jersey parking lot.
Anyway, @
nlerner is right. I have some Greek coins that go back to 400-500 BC, and some broken bits of pottery that are another thousand years older than that. I don't remember exactly what I have, nor why I picked them up. Whatever the compulsion was, that made me pick them up, 40 years ago, I'm over it now.
I also have a stone axe head that may be pretty old. I don't know where it came from, new world or old. Someone found it somewhere. Whoever it was, I kinda wish they'd left it there, because now it's just a knicknack with no provenance.
It’s a Marcus Aurelius denarius that would help to frame a timeline. There are so many variations of these that it is dizzying to get an ID closer than that.