Many thanks Dom!
Yes Ibrahiim , Ive seen that stamp, is it applied on a seperate piece of metal? I dont know if thats common in Yemeni jewelry , but in many countries it how stamps are "moved" from one peice of jewelry to another to give fake provinance.
So the Muslim one we can discount for this discusian.
Here a picture showing the front of the chape carrying the same mark as yours Khanjar.
I have clipped it down in size as it is still currently for sale. {Unfortuanatly its hilt is very sad one.
}
Spiral