We made rejoining the two halves of this fine antique rug the first step in our Persian rug restoration. This required recreating and joining the warp from each side of the halves and reknotting the pile in the "seam" area.
Of course, sewing the two pieces together is an option for repair, but it is not an option for an authentic restoration. When working with an antique rug of this quality, we always recommend clients do a proper rug restoration to bring back the rug to the way it was when it was originally hand knotted and to preserve it for generations to come.
This last picture above shows the Persian runner as one piece as it was knotted originally. Of course, there remained a lot to do after this point in our restoration as the worn pile throughout the field of the rug clearly indicates. --www.traditionalrugrepair.com