Sudanese Throwing Knife. 
This iron weapon comes from along the Sudanese Nile. It was possibly meant for ceremonial use, but is suspected to have been produced for sale to foreigners as an early form of the tourist trade. It has similar handle and dots etc. See 
https://www.flickr.com/photos/mather...um/15319145753 
Regards,
Ibrahiim al Balooshi.