Thank you Kubur,
but I really doubt that they would make a "good" fighting knife. What I have observed is that the ones without ricasso at the edge seems to be heavy used in the middle and the ones with are worn in the first third of the edge like it get something cut at the same place and same manner when you understand what I mean.
I think Betel would be a good guess. This was also part in my previous request, is there known any solid based knowledge for what they get used regularly? And I have another statement about we should think about, there are so many fancy ones that I think it was worn by celebration and show the status also!?