I have seen this certain knot 3 or four times up to now. Once I saw it attached to a Feldj�ger bayonet. But as this bayonet was played with I am not sure about the role of this knot on this bayonet.
Sorry for the bad pic, there was no better one.
Regards,

1.JPG (48.62 KB, 120 downloads)

wotan, gd.c-b#105

"Never look for sqare eggs" as a late owner of an original FHH-dagger used to say.