Hi Freddy,
Neat knife! My vote's with Mark, but my first thought on seeing it was, "Oh, that's a quick-change dha."
What's a quick-change dha, do you ask?
A quick-change dha is where you say, with total confidence, "Oh, that's a dha," and quickly change the subject.
My take is it's hard to put a terminal ferrule on a leg bone, and that someone in "Dha country" (perhaps a Hmong?) thought that the bone would be cool as a knife handle.
Fearn