Help Identify This Ancient Bronze Coin

Ron, I thought exactly the same, but been having foot in mouth problems lately! I know nothing of Barbarous issues, do think the bust looks more like Trump tho...

Kurt, do you think it has been tooled? Especially on the bust.

The reverse on the OP coin and on the coin linked by Biancasdad are so extremely similar that I almost thought it was the same reverse die.
It isn't, of course, but since they're from the same workshop (4th officina of Alexandria), I won't be surprised if they were actually made by the same die cutter.

As for the obverse, while the bust does look like someone from the 18th century (I'd have guessed Jefferson rather than George II), I suspect that it's just an artifact of the bad preservation, and it originally looked fairly normal for the type.
(So yes, I believe that the coin is official.)

It might be useful to remember that the mint workers in late 4th century Alexandria might not have known much Latin at all (just Greek).
It's good enough that they did even that well with unfamiliar lettering; some coins of Arcadius are missing letters, and it only gets worse later (until the complete switch to Greek).