Sorry just noticed these questions will try to regularly update this thread, glad to see some interest
Was it used to kill someone or something?
no just used in camping very lightly for general purpose, sharpened and oiled regularly since it was purchased around 2016 during my Central Asian tracking trip.
I'm curious as well. Starting bid is around $250, but what justifies such a price tag?
To me, at least from the pictures, it looks like an ordinary knife.
What's the story behind it?
The knife is made using the ancient Turkic formula of blue tinted steel, the exact composition to this day remains unknown.
Granted this version is more ornamental and for general purpose, you can tell by the design it s more for every day use than combat, although ancient Turks were lethal and extremely famous for their smithing abilities in their Central Asian homelands.
I traveled across Kirgizistan looking for exotic blades, I got this (among a few other pieces like a whip and an axe) from the blacksmith who personally made it and was selling it in the depths of the central market in Osh after he recognized that I was Turkish and brought out his hidden stash.
Chances are close to 0 to find a similar knife anywhere else on Earth, unlikely even if a regular traveler were to personally venture to Osh looking for something of similar authenticity...