I've heard a lot of these swords with the etched calligraphy are unintelligible. They were made for illiterate Mahdists by illiterate smiths in Omdurman. Calligraphic Arabic is hard to read unless you have been raised in the culture, so maybe one of our Arab members can shed more light on it. I suspect the blades were more for show, by the higher ranked members. A lot of them do show up as bring-backs by soldiers from the battles. I suspect some were made for later tourists as well...
An older archived discussion on these thuluth etched swords <-link
Is yours sharpened? A full length photo of it out of the scabbard would be useful.
Hopefully one of our more knowledgeable kaskara aficionados can provide more info.