Tom Scott Antiques has dated this piece to the 1930s.
When closed, you have a simple painted frame with the one main mirror section. Opening the first mirror up, there is a vintage embroidered silk panel which also is hinged to give you the lefthand side and the fixed rear mirror.

Interestingly, the rear mirror has a faded silhouette of the wall hanging behind, which suggests this hung in a very light area and was fully open like this for many many years.
I have shown the mirror over a sofa table with a pair of lamps either side so you can see the mirrors can be used with something below!

This would make a great hall mirror, but also as a bedroom dressing mirror or dressing table mirror.
It is heavy with all these mirrors, so will need a good sturdy wall to hang on.
Measuring:
When closed
50 1/4 inches or 127.5 cm high
3 1/2 inches or 77.5 cm wide
3 1/4 inches or 8.5 cm maximum depth
When fully opened out
47 1/4 inches 120 cm maximum width
Tom Scott Antiques has dated this piece to the 1930s.
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