This looks like West African as mentioned before. The markings on what is left of the leather is a dead give alway as is the sack cloth bulk of the scabbard and handle. You can find cardboard, scrap silk and other materials for this purpuse. As for the the blade travalling all the way from Zanibar, is a little romantic when one considers the trade in west Africa, the trade coast. Especially as we do appear to be looking at a trade blade. Where this blade originated is a little more tricky to be sure of. Britain, Denmark, Holland, France,Germany, Spain? all had a finger in the pie. That sounds quite unpleasant.
