This is a link about circle decorations:
http://vikingsword.com/vb/showthread.php?t=16661 look at the knives sheath. It appears to have only one wooden insert, as does my swords scabbard. The circles are kind of understandable as a simple design to make.
The second link provided by Richard G shows an odd tapered tang!
http://www.vikingsword.com/vb/showthread.php?t=14832 This thread as Kanjar 1 had stated earlier pointed to Algeria and Northern Africa as a possible source of the knives. What do you think?
Oh, one more thing the odd steel shown on this knife reminds me some better quality Koummya's can have a similar odd looking steel. Regards, Steve