Agian I do not know is this helps or not but having established the script is Farsi and Persian this might help with a more pin point origin. Look at the work especially on the handle and then look at this traditional rug design form from a region and town of Veramin. Some similarity?
Picture from "The Atlas Of Rugs and Carpets" and one I have.
http://www.bukhara-carpets.com/orien...pet-D1251.html
http://www.jozan.net/distrikter/veramin.asp
PS also spelled Varamin.