I'm wondering if it's just been "tooled", rather than an outright fake - someone has taken a worn coin and "re-carved" new hair details etc onto the coin, to try to make it look less worn.
Tooling is a sadly common practice with ancient coins, but one rarely sees it on modern coins - mainly because it's much more obvious when it happens.
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