[mariusgmioc]

I believe those are examples of incomplete/unfinished swords. Some of the hilts in the photos you provided clearly have cutouts for the langets of the crossguard (see the red arrows) that is obviously missing.
However, most of these hilts seem to be unfinished replacements, as they are very crudely made and not of the usual materials. This is more obvious from the photos I added.
What would you do if during a military campaign your hilt gets broken?! Of course you'll have it repaired as soon as possible with whatever you have at hand, hoping you will have it properly done later on... if you survive and have the money for it.