Hi,
I find this piece and its marks have really intrigued me, so I have spent a lot of time reviewing whatever marks I could find on Saharan Africa.
Rojo is right, I stand corrected on the far left mark, it certainly is a simplified version of the tughra. The two circular far left marks are very similar to examples of city/standard marks used in many North Africa states in the 19th century.
In the image below, I've reoriented the marks to enable better comparison and added in a Turkish tughra.
What I now believe you have is a pre 1906 Egyptian marked piece. Egypt was still, at least nominally, under Ottoman control at the time, so the tughra supports this. I think the reverse R mark is really a B and is probably the maker's stamp.
The bracelet is a finer example than most I have seen, this may be because it is of earlier vintage than most on the market. Please keep in mind that all of the above is theoretical, I have never been able to find documented examples of older Egyptian marks.
Regards, Tom
