Brian MacDonald Antique Rugs & Carpets has dated this piece to the 1850s.
Within the central, octagonal lozenge, are various small symbols on an ivory background, which is not something readily seen in later 19th century Karachovs. Note also, the 'zigzag' lines on either side of the red ground, one longer than the other and below each line, are 'fives' or 'quincunx' - symbols of protection.

Lastly but hugely important, is the rare and early main border on an ivory background, which I see as double-headed sunbirds, symbolic guardians of the gates of Paradise.
This is a highly important rug which is smaller in size to the later 19th century Karachovs, and in very good overall condition.
Size: 1.86m x 1.40m (6' 1" x 4' 7").
Brian MacDonald Antique Rugs & Carpets has dated this piece to the 1850s.
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