Hello All!
I spent most of today looking for more things about this dagger, I found it. I now feel beyond a resonable doubt that it has a Tuareg origen. So far I have seen a Takouba and a Telek with the exact same pattern of the "X" and line pattern. I have posted the takouba link before but heres the Telek link. I have been using Oriental-Arms as a main resource for comparisons. This chould mean that the Tuareg did/do use jambiyas.
Mark...
http://www.oriental-arms.com/photos.php?id=1359
and a limk to an old thread.
http://www.vikingsword.com/ubb/Forum1/HTML/000031.html