Need some urgent help on this one !!!

[fernando]

By the looks of it one can see that, with its sort of half hilt, this would be a piece to lean against something. It comes to my mind this type of Chinese twin daggers/swords that fit in the same scabbard. However the back side is not absolutely flat; still the guard has some protrusion ... and the blade ridge has practically the same volume.
Also, unless some skilled antiquary made a perfect job, it doesn't look technically accurate enough to configure such 'modern' Chinese twin blades, as it looks to have some real age; but i don't know.
Is there anyone out there to give me an impression about this item ?
You will obviously forget the handle cover; someone's invention with no basis.

Total length: 41 cms. (16").
Width at base: 60 m/m.
Thickness: 10 m/m.
Weight: 529 grams.

.