The Vintage Interiors has dated this piece to the 1920s.
The chairs are a set of 8 and and a set of 6 that are almost a perfect match.
The chairs have two carvers and 12 side chairs.
The chairs have been reupholstered in a contemporary oatmeal fabric with a cream stripe. The chairs have been finished with antque stud work detailing.

The chairs have swept stretchers.
The chairs are solid oak and are all very clean and sturdy.
Please see photos.

The overall dimensions are
Carver chairs
1150 mm tall
600 mm wide
550 mm depth
500 mm height of seat
470 mm depth of seat
Side chairs
1100 mm tall
480 mm wide
460 mm depth
400 mm depth of seat
470 mm height of seat
The Vintage Interiors has dated this piece to the 1920s.
You can view the stock and full dealer information on the The Vintage Interiors Profile Page