New sword day!

I just got this sword today!

It looks a bit rough and crooked. It also suffers from a broken (repaired) guard. There are two threaded holes in the blade, most likely for mounting the blade to something for decoration / display. It looks very much like the French M1816, but the blade is different and I have never seen this symbol on the pommel of this kind of sword before. I do believe this is an authentic piece. Any info is appreciated! Cheers!