Antique Walnut Chairs

Hi,

I recently purchased and table and chair set. It is antique and the chairs have been re-upholstered. I am trying to determine who the manufacturer was so that I can located what area of the country the chairs were manufactured in. I like to start search for additional matching chairs. Any help you could provide is appreciated. The only marking that I can locate on the table are the table slides manufactured by the watertown table slide company, but apparently that company only made the slides.

Thanks,