Antique Furniture Direct has dated this piece to the Edwardian era.
The back is a later addition (would originally have a been a spindle back chair). In a beautifully figured solid oak, it would make a very stylish desk chair.

Construction/Wood:
Oak
Condition Report:
Fairly solid and sturdy, a little creaking here and there. General wear and marks commensurate with age. Later bentwood back panel.
Dimensions:
Width: 66cm
Depth: 50cm
Height to Seat: 45cm
Height to Arms: 70cm
Overall Height: 84cm
Antique Furniture Direct has dated this piece to the Edwardian era.
You can view the stock and full dealer information on the Antique Furniture Direct Profile Page