This is a good quality English armchair from the George III, Hepplewhite period, made circa 1785.
The hardwood, possibly red walnut, frame has a camel back with a well carved central vase shaped splat featuring Prince of Wales plumes. The arms are beautifully curved and down-swept. The seat has generous proportions and has a serpentine (front curved) shape covered in a dark green leather. The front and rear legs are tapered and have a central and rear leg cross-stretcher. 
This is a very comfortable and elegant armchair and would make an ideal desk or library chair. 
The proportions, color and patination are really good and typical of a period English 18th century, Georgian Armchair.
 
 
DIMENSIONS
Depth *
21.25in
Width *
24 in
Height *
35.25 in
Seat Height
19 in