"Persia or Iran, the two top left characters are the Persian numerial for 84 or 870-1000 parts silver. The language is Farsi. Will let those who can actually read it translate that for you. "
Well thanks for the quote but we certainly need better resources for Persian, Ottoman, and other Middle Eastern hallmarks and makers marks. Did make a contact with a scholar who had worked with the Khalil collection. Let's see if he has any suggestions.