Carse Antiques has dated this piece to the Georgian era.
The actual mirror frame is half round cross grain mahogany with the original bevelled plate. The mirror is fully adjustable in height up and down within the outer frame. Lovely colour with original patination and a waxed finish.

This has definitely NOT been part of a cheval mirror but I think the whole piece may well have been part of a larger piece of furniture, possibly a very fine wardrobe as there are countersunk screw holes in the side frame parts where it has been screwed into something.
SIZE; 20 1/2" wide by 57" high. The actual mirror plate is 15 1/2" wide by 28" high
CIRCA; 1800 - 1820
Carse Antiques has dated this piece to the Georgian era.
You can view the stock and full dealer information on the Carse Antiques Profile Page
Carse Antiques is a registered member of LAPADA