What is the size and can you please provide images of the front, back (so I can see knots-per-inch and the tag.
I can recommend some rug dealers for you to contact. In the meantime, I will open your question to all the experts at no additional charge so you can get more opinions. If someone knows the answer, they will respond to you here on this thread. You do not need to re-post your question.
As I am familiar with this rug, woven in Iran it appears to be from the early part of the 20thC,. I would be happy to value this for you what it would sell for if you sold it on the current market .