Charles,

Cool map but not sure if its genuine. The paper looks glossy in the photo. Is this printed on vellum or some other animal hide? That is something you probably wouldn’t see in the 17th century but more like the 12th or 13th centuries. To the best of my knowledge, the earliest known printing of an arabic book is from the mid 1500’s. If its paper, shine a flashlight behind a blank part of the map and see if you can see chain lines or a watermark going through the paper. These lines are unique to paper from the 1500’s until around 1800. This is because the paper would be hand made. If you don’t see those lines, I would be very suspicious. Also, if this came from an atlas, I don’t think you’d see the kind of crease through the center of the map. It almost looks like it was in a book and a whole group of pages was bound in separating the entire map into two halves that you couldn’t see at once. I’ve handled 16th and 17th century European atlases and the maps would never be folded and bound in that manner. Do some more research on this if you have time and keep us lizards updated if you are going to appear on Antiques Roadshow.