Hello Willem,
Yours does look like a maasai seme...the handle is interesting though...have a look here :
http://anthro.amnh.org/anthro.html in the Collections Database, then in the "African Ethnographic Collection" and search for maasai.
I just received mine, but the sword is really wedged in tightly in the scabbard. Are there any ways to loosen a scabbard? Would applying abundent oil do it?
Emanuel