Jack,
Nice older kaskara. Blade most likely imported, pre-Mahdiya. Has older style 4-piece welded crossguard. Mahdiya era blades often had roughly engraved characters and text, but many Sudanese tribes, especially the Jaa'lin (sic) from the Nile Valley didn't support the cause. Look under the langets for possible maker's marks.
The paired moon faces don't look to be Kassala maker's marks. Here is a thread on moon faces. Sometimes they can be diagnostic. Jim is very knowledgeable on them among his wide expertise.
http://www.vikingsword.com/vb/showthread.php?t=19794
Eager to see your other kaskara and explore what stories they may have to tell.
Best,
Ed