I think I agree with Iain for the most part. However, if the scabbard (crocodile skin) is original to the sword it could be from Upper Egypt (Ottoman cross guard?) and the kaskara blade may have been adapted by a member of a crocodile cult along the Nile. See attached thread from 2003.
http://www.vikingsword.com/ubb/Forum1/HTML/001607.html
Just a thought.
Ed