Very interesting rug. From the back it has a lot in common with moroccon tribal weave. The way the kelim on the long side and the rugs end with the knotted fringe under the new fringe looks a lot like moroccon. Visiting Al Andalus last year, I found an existing rug production in spain. Most of the rugs are low quality kelim, and sold to tourists, but the old tradition still is there. Mostly they are offered in the southern mountain area of Sierra Nevada in the villages of Capileira, Bubion and Pampaneira. Most natives there are descendants of moorish refugees who settled in the mountains after the reconquista. The nearby city of Granada was the last stronghold of the moorish kingdom in spain until Boabdil had to surrender in 1492, and there is a lot of handicraft that is equal to the things made in Morocco. I have too little knowledge about what these rugs go for today, but since it has an interesting background, I would contact the major auction houses like christies, sothebys, or rippon and boswell. I dont think it will be a fortune this rug will sell for, but it is old, it is in good condition, the faded colors fit todays fashion (like Choobi and Ziegler rugs) and the rare provenience may be a good argument for a good price. I would get it washed by a professional, and checked if the fringes are original or added (I personaly dont think they are original and agree with RugPro, they look like they where added later).