Hi,
Advising on location of sale is a hit or miss.
For a rug such as this, I would suggest Ebay for quick sale.
If you don't mind the additional expenditure, try posting for several weeks with a best offer around $3,500 and 10 day listing. This should help gain some watchers.
If you wish, we are able to verify this rug for you. This will help a private seller gain credibility for statement of what is at hand or you could simply link to the forum.
After several weeks of exposure, take the rug from best offer to no reserve. We can verify for $5, and even make a statement of "
suggested retail value" if specific images are sent as the lower left corner looks a bit lighter. Feel free to contact me privately.
Alternatively, you may consider local auction houses which I will be happy to suggest some in your area or to send to.
All the best,