I found a second related example (O’Bannon, "Oriental Rugs", #36, picture from Peter Pap). It is labeled Shirvan (Chaili rugs are commonly categorized as Shirvan ). This rug has a nice design and is more organized, but lacks the tribal character of mine. It is otherwise very similar and was probably woven by settled villagers. O'Bannon attributes it to circa 1880.

Comparisons between the two rugs