[ariel]

Now I understand!
I looked at the entire image, couldn’t find anything, and thought that the image on the throat of the scabbard was the point of discussion. My fault, mea culpa!
The first image, what I thought was the pommel, is the chape with the shashka upside down.
Yes, I fully agree, this looks convincingly like a tamga. It does have some resemblance to the Kayi mark, but differs from it. Perhaps the owner was a distant member of some sub-sub clan?

Crimean Khans were highly respected by the Ottomans to the point that apparently there was an unwritten ( or even written?) rule that in case of the extinction of Sultan’s line the Crimean Khan , as a direct descendant of Chingiz Khan, would assume the Ottoman throne.
Well, the last Khan, Shahin Giray, was exiled by the Russians to the Turkish Rhodes in 1783 and strangled there in 1787 with a silk cord because he allegedly planned to replace the existing Sultan.
Still, he was strangled and not beheaded or stabbed, because royal blood should not have been spilled. Some measure of respect, but the “rule” worked against him. That was how Sultan’s relatives were killed upon his ascent on the throne to prevent any possibility of a coup, and that was how the Mongols killed Russian princes captured at the Battle of Kalka: covered them with a heavy wooden platform and assembled on top of it for a celebratory dinner , smashing the prisoners to pancakes. Again, no royal blood was spilled:-)