HI everyone. If you deal in antique linens, can you help? [View all]

I have an old crewel work hanging panel. It has been exposed to everything for at least 100 years, probably a lot longer. As I was inspected it today, I thought it looked awful. The linen is now shades of brownish, the colors of the crewel work are fine but slightly faded. It has a green cotton(?) backing, green fringe at the base and green loops at the top where it is attached to a wood hanging bar. I have no idea what the material of the fringe is, probably wool.

I think it now looks unsightly and hope to find a way to rejuvenate this very nice antique hanging. Any ideas? The hanging is about 8" wide by 40 inches long. Reminds me of the old 'bell pulls' but it was never used for that.
The link added (eBay) shows the general type of tapestry but this was never a bell pull.
I would appreciate any ideas before I plunge in.

http://www.ebay.com/itm/Vtg-59-Handmade-Jacobean-Floral-CREWEL-Embroidery-Bellpull-Brass-Frame-Hanger-/201591372842