A late 19th-century Caucasian rug, the black field with an allover lattice design of rows of atypical botehs in red and gold within a narrow blue geometric floral motif border. A specialist rug dealer in oriental and western rugs and carpets, Doris Leslie Blau’s impressive collection of Antique rugs includes rare Turkish, Persian, and Indian masterpieces, many of which date back to the Medieval Age. Some of these rugs are so rare that no more than a few exist in the entire world.