Misecorde, Stiletto, ?

[JoeCanada42]

Hi everyone, I would appreciate any help with this,

Just won this last Tuesday and picked it up today.
the local online auction called it, vintage dagger 9.5 inches, based on the auction photos i couldn't tell if it was a letter opener, the brass looked too clean in auction photos, nevertheless a few things drew me to it, I payed for it ,there was another bidder I took it from 20 to almost 100.

I figured it could be a misecorde or stiletto or something along those lines.

it is actually a 9 3/4 blade and 15 inches total length
I liked the fuller and little bit of ricasso, I liked the bone showed age and stain. now that I see it closer in the damaged part you can see the bone has lines like a tree would. the brass looked clean of tarnish because it is gold gilt. but looking close clearly shows age.

the guard appears damaged as if missing finials
the handle is pinned in place, it does not unscrew..
I'm Shure it could cut, but it doesn't appear sharpened.