Hi Lew, I have seen on some books..... I think that the hilt is Boa..... the blade seems Songye but the two tribes are quite distant, but this is not a problem the blade could well travelled, but what let me think is that the blade is not tipical Songye and so I believe that the short sword is a rare Boa.... just a guess. For the Zande..... mmmmm I never seen a sword that shows clear characteristics that one can say "this is not mangbetu, nzakara or boa and so is Zande" I have always seen Zande guys (on old photos) that show straight swords from other tribes

but maybe I'm wrong....