The Cross of Agadez: Very similar design to that of the above cross..Certainly the design above would have been attractive a Talisman to the Tuareg tribals in the Nigerian and neighbouring regions...see
https://www.google.com/search?q=tuar...ww-tZxufI3M%3A for many other examples.
The European Link. I note a host of different sources for the use of the moon from Toledo and Solingen not as makers marks but more as a trend/fashion in blades with popular marks. Various centres used these including the workshops of Juan Martinez and Peter Munich in Toledo and Solingen respectively in the mid 17th C. I see no reason why these could not have joined the copied marks popular in North Africa and some may well have arrived there already adorned..
I add the important reference on Forum at
http://www.vikingsword.com/ethsword/takouba.html