There is a lot of lost wax casting done in the Mandara area. Here's one:
http://www.vikingsword.com/vb/attach...id=32962&stc=1 (just linking the image since it was an old sale in the swap forum that was never marked as sold).
Also not the circular motifs on that piece.
I know of a few others in the collection of friends, but I'd have to ask before posting their images.
My Chamba blade is about the same thickness at the base of the spine.