Tom Scott Antiques has dated this piece to the 1920s.

Good size mirror which could work well as a single piece, but at the time of listing, there is a second mirror very similar in size that could work as a near pair as shown.
I have fitted hanging chain so you can hang it either way.
Measuring:
Frame
39 1/2 inches or 100.4 cm wide
30 1/ quarter inches or 77 cm high?
Mirror
29 3/4 inches or 75.5 cm wide
20 1/2 inches or 52 cm high
Tom Scott Antiques has dated this piece to the 1920s.
Specialist dealer in french & english decorative furniture and interiors
You can view the stock and full dealer information on the Tom Scott Antiques Profile Page