Brian MacDonald Antique Rugs & Carpets has dated this piece to the 1870s.
What is also particularly attractive is the top panel with its depiction of seven full '8' pointed stars together with a rather squashed star on the far right side! There is some minor brown-dye corrosion within a couple of the stars otherwise the bag-face is in remarkably very good condition.

For reference, see the recently published book ‘Nomadic Visions’ by Michael Rothberg where he illustrates a similar piece on page 206 and attributes the ‘joval’ to “South Kurdistan, north of Kermanshah”.
Size: 1.10m x 0.87m (3' 7" x 2' 10").
Brian MacDonald Antique Rugs & Carpets has dated this piece to the 1870s.
Dealing in antique and old tribal rugs, dowry weavings and decorative carpets from the near east and central asia since 1979.
You can view the stock and full dealer information on the Brian MacDonald Antique Rugs & Carpets Profile Page