Originally Posted by Ibrahiim al Balooshi
Salaams Iain ~ Thank you for your diagram illustrating the moon relating its so called facial character.
It is what it is and it has a face. Usually when paired on face is open eyed the other winking. As I already stated these symbols can take on different meanings in different cultures, however the retention of the facial features speaks strongly to the lineage of the mark.
A new moon as far as I'm aware in Islamic art is not illustrated with a face... As seen in the one example you linked an image of where it is simply a crescent.
In the context of African blades the mark retained much of its original form because it was a hallmark of quality and not merely an illustrative symbol.
In short, marks can take on multiple meanings, sometimes outside of their original context. But when this much of the form is retained it speaks volumes as to the influence of the original application.