You are looking at a turn of the century double light switch cover. This particular cover is for the Push-Button style light switches from the turn of the century.
Push-Button light switches are usually replaced with modern light switches due to the fact that the former is a fire hazard and rarely meets code in most places.
Due to this, they are very hard to find, especially mirrored ones like this and another I will be listing next.
There is a decent amount of yellow paint that is around the edges - that can be scraped off with a knife, or you can heat the paint off with a hairdryer.
Aside from that, there is normal wear and tear on the mirrored portion as well. Overall, a very unique item that can be used for many craft projects. (For example: put dowels thru the holes and use it as a clothes or key hanger!) The possibilities are endless.
The cover measures approximately 4 1/2" by 4 1/2".