Medieval sword - opinions needed

[AHorsa]

Dear all,

I would love to have your opinion on this sword. It is supposed to be a river find but as there are so many fakes today, I wonder if anyone finds something suspicious.
It is covered with a layer of glossy wax. The blade is pretty felxibel. The rivet is rivettet into a conic hole (at least it seems so for me).

Dimensions:
overall length: 104cm, Blade: 86cm, blade width: 5cm, parrier rod: 21,5cm, weight: 1200g

If some specific images are needed, please let me know.

Looking forward to your thoughts.

Kind regards
Andreas