A Trousse knife?

[Rafngard]

Hello All
I bought this at auction a maybe a month ago, but have only recently gotten around to taking pics.

I have no idea what this is.
It was sold as Mongolian, and, maybe?

The hilt and scabbard seem to be wrapped in shagreen. And there is a kind of button lock, that releases it from the scabbard when pressed. It seems to have some age

I think it might be something like a trousse set, but one would normally expect a pair of chopsticks to be included in that.

What have I got here?

Thanks in advance
Leif