A plateau is generally a circular or oval fotted tray mounted on small feet with a mirrored surface.  Often plateaus are used  with centerpices to decorate dining tables. The mirrored surface allows more light to be reflected in a pleasing manner.

Sheffield Silver Plate was produced in Sheffield, England from the mid-1800s.  Unlike solid silver, Sheffield silver plate was made of a base metal coated with a thin layer of silver.  This technique allowed manufacturers to produce pieces that looked like solid silver at a much lower cost.  Silver plate was popular for its affordability and for the intricate designs that could be produced on its surface.  Common items included candelabra, flatware, tea sets and serving trays.  Despite its lower cost, Sheffield plate is highly sought after for its elegant design and high-quality construction, making it a popular choice for antique collectors and silverware enthusiasts.