This sort of daggers is far away of my knowledge but when I look to the koummiya in question I also think that we see here a 19th to early 20th century piece.
When you look to the loops where the rings for the carrying strap are attached you can see some serious wear which can't come from short or no time of use.
And I agree with Kubur that the overall appearance is the one I am used to see by good old/antique examples I've seen here and the few ones I've handled.
But like said, I am far away to be an expert for this daggers.