Yataghan Spot the Difference

[Rumpel]

Here's a rum thing...

Can anyone see the similarities in the decoration on the following yats? Hint: Crudely chiselled identical decoration, anomalous inscriptions and illegible maker's marks on blades attached to widely differing hilts...

The relevant yats are to be found in these threads:

http://www.vikingsword.com/vb/showthread.php?t=12424

http://www.vikingsword.com/vb/showth...light=yataghan

http://www.vikingsword.com/vb/showthread.php?t=11535 (this one being mine)

and, at a pinch, : http://www.vikingsword.com/vb/showth...light=yataghan

So, of all the yataghans in all the world, three/four from what looks to be the same atelier happen to come on the market at the same time, with completely different fittings? Discuss...