jambiya dagger

[Adriboy]

my name Adrian, from Indonesia... I have one jambiya dagger from yamani that belongs to my family.. I want to have the help from everyone here who know that is my jambiya dagger is realy from yaman country? is it old and is it a good one or maybe just a standard souvenir for tourist weapon?

then is my dagger handle from standard bull horn, cow, wood, ivory or rhino horn, or else?

and about the leather, is it from real leather, plastic leather or else?

thanks if anyone can give information, since this dagger is beautiful for us and we want to keep it for my family... thanks alot then