It's an interesting one. Overall the style is ok, the strike and reverse detail are as expected (on great coins of course), and these later coins could be quite flat compared to the earlier ones. The damage to the M on the obverse looks a bit fake though.
It's a Class 7c Arc Stem from dies 74/127 which has one known example. Unfortunately there are multiple examples of this coin so it's not clear which one is the real one (if any of them): The British Museum (CCI 68.0371 card 1; unfortunately not in their online collection), Baldwins (CCI 68.0371 card 2), Colchester Musem (CCI 68.0371 card 3), SNC April 1977 (CCI 68.0371 card 4), Spinks 1990 (CCI 68.0371 card 6), and a modern AR forgery (CCI 62.0026). The coin you posted is identical to those so it's a modern forgery. It's possibly a reproduction made to sell in museum shops.
There are other coins listed with the same obverse die but different reverses some of which are real (for example CCI 14.0930) and some which seem to be fake (for example CCI 04.0602). This one (CCI 14.0930) is a genuine one from the same obverse but from the next reverse die:
Here's mine for fun (not sure which dies):