No, sorry, my fault! I've remembered that I know this sort of daggers and have had a look to "panga na visu" and there is a very similar dagger on page 23, piece 13 described as Tuareg/Mandingo from Mali but personally I would go with my previous statement in the link you provided.
Again, sorry for any confusion.
Regards,
Detlef
No worries, I was just confused as to whether there may have been some new information that pinpoints these at least in terms of geographic area. To sum it up, Zirngibl thought these may be from Mali/Tuareg areas, while in previous forum discussions the conclusion was that these are most likely from Senegal. Unfortunately West African knives and daggers have not been studied well and as a result there are a lot of contradicting attributions, such as in this case.
12th June 2018, 11:13 PM
I've remembered that I know this sort of daggers and have had a look to "panga na visu" and there is a very similar dagger on page 23, piece 13 described as Tuareg/Mandingo from Mali but personally I would go with my previous statement in the link you provided. 
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