I'm sorry, guys, but I think this one is a replica. The design was used on the gold aureus linked to by rooneydog, but this coin clearly isn't gold. And as far as I can tell, this design wasn't used on the denarius. It also seems to have been painted or plated; the coating is worn away at the high points on the reverse.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis