Trumeau mirror

A trumeau mirror or pier glass is a wall mirror originally manufactured in France in the 18th century. It takes its name from the French word , which designates the space between windows. In England it is normally known as a 'pier glass'.

Trumeau mirrors were originally intended to hang on a wall between windows, providing a decorative element and bringing more light to the room. Most antique trumeau mirrors are highly ornate and often gilded.

The mirror is almost always rectangular and sometimes includes a decorative portion at the top, with the mirror below it. Those designed to be placed above a mantelpiece, rather than between windows, could have candles placed in front of the mirror to increase ambient light.

Reproductions of 18th-century trumeau mirrors became popular in the Regency period and in the 1950s, when French furniture was popular.

A genuine antique trumeau can cost between US$2000 and US$20,000 or in England at auction from £150 - £600

...
Wikipedia