My Sumba collection and some observations

[Sajen]

Originally Posted by Athanase

....But they are never cut-out on the backside of scabbard mouth.

Maybe a sign for the more recent date of your examples? I think that this cut-out is done to prevent any break you described? The cut-out on my examples is clearly carved and not broken.

Originally Posted by Athanase

The cut-out can be made to limit the risks of breakage in this apparently fragile zone of the sheaths.

I think that the cut-out at the edge is done to prevent a finger cut by using the knife since there is no guard which can prevent a slide of the fingers from the handle.

Nice collection, also when your examples are more recent!

Regards,
Detlef