I recently bought an Egyptian tankard. I believe it's 900 silver, based on the marks. However, I need some help with the city and date. Not sure if this is before or after they started using dots to indicate city of manufacture. And I can't read Arabic letters very well, so I'm having trouble matching the date mark to a specific year (range). Any help would be appreciated.
Please see the images below. Thank you in advance.
![Image](https://i.ibb.co/yhhMW5M/s-l1601.jpg)