Hi Ian,
A beautiful Sudanese arm dagger of very good quality.
The second long dagger is indeed a Shona dagger of good age, old or antique and has nothing to do with a Shi sword.
Here:
http://www.vikingsword.com/vb/showth...ghlight=dagger you can see an arm dagger which I sold years ago, also with inscription on the blade.
Regards,
Detlef