Aaa yes, here we are:
http://www.vikingsword.com/vb/showthread.php?t=711
There was short discussion about such knives, with no conclusion except that they were likely North-African. My thought is that they are tourist pieces as they don't look too strong. How thick is the blade? If the scales are ivory, then I'm wrong, but if it's only bone, or maybe even plastic then...
Regards,
Emanuel