It looks Arabian (except for the sheath that has a knights helmet on it) in style to me. Are there any markings (words) on the blade itself? I can not tell from the pictures. It is a very nice knife though, I like it.
I am not saying that your knives are replicas, but I have seen some very nice replicas at local flea markets as well. I have one, and besides the fact that it was sold as a replica, I can tell because the the handle has seams on the sides as if it were two molded halves, and on the blade itself it says "Stainless China".
I am not a knife expert by any means (in fact i just had knife questions as well
) so this is just a thought.