Welcome to the forum, Marcel!
This doesn't look like rhino to me. (Certainly an advantage if you plan to cross borders with it...)
I guess you've seen this current thread:
http://www.vikingsword.com/vb/showthread.php?t=17166
Apparently this piece has seen some recent repairs/replacements (e. g. the plate at the throat of the scabbard looks new). BTW, what is the white stuff (repair at the base of the hilt)?
Regards,
Kai