Tom Scott Antiques has dated this piece to the 19th Century.
This mirror can be hung as you see it here, “portrait” or you may prefer to hang it “landscape.”

It will hang well as an overmantle, but also as a hall or console mirror too.
The gilt has aged gracefully so you have a mellow gilt finish with some wear throughout.
Measuring:
38 1/2 inches or 98 cm
31 1/2 inches or 80 cm
2 inches or 5 cm
Tom Scott Antiques has dated this piece to the 19th Century.
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