Dagger with fullered blade for id.

[Cerjak]

In fact this dagger if made from a sword blade could be from a blade about 4.5-5 cm wide.
I could superposed this dagger on top of this this Dussage blade in order to have an idea of the geometry of a possible original blade and has exactly covered it .
This Dussage has its blade about 4.5 cm near the hilt.
So it ‘s a possibility that this dagger could be a broadsword adapted but I don’t have picture from a blade fullered till the tip .