A fancy utility knife (siraui) from Sumatra

[Sajen]

Have got this utility knife recently. Like we pointed out in other threads (http://www.vikingsword.com/vb/showth...ghlight=siraui) seems the name siraui for this sort of knife wrong.
This one, maybe Batak (?), is one of the best ones I ever have seen, handle and scabbard are from horn and the blade is very well made. It is 33 cm long inside the scabbard with a 16 cm long blade. I haven't etched the blade until now. I have attached a picture with my two other knives of this sort for comparison.
What you think about this knife?