Hello Athanase,
in my opinion are both "original", what Alan has written in #2 by this thread:
http://www.vikingsword.com/vb/showth...ighlight=sajen is legal also for kujangs. The first one you have shown seems to be much older as the second example which is very nice with it's mounts, a very nice example. When you boring it one day you can send it to me!
The metal cover will be some sort of german silver, I would rule out aluminium.
Regards,
Detlef