WOW! Those are superb examples Dave! Thank you so much!
These show pretty much what I mean about symbolism, and often these configurations are applied by tribesmen themselves as well as by local artisans. While as I noted, in many cases these stylized motif are copying decoration seen elsewhere, examples such as in the dagger in photo #2 with the linear arcs paired .....and these are imitating the 'Lohr' panel seen on the upper blade of many kaskara.
The geometric lines and dots seem to imitate certain 'map' type configurations with strategic locations represented on some Islamic blades. Geometrics and symmetry are key symbolism often seen in tribal folk religion and talismanic imbuement .
I really do appreciate these additions Dave, and definitely ideal additions to my notes!