Old Sheffield Plate (or OSP) is the name generally given to the material developed by Thomas Boulsover in the 1740s, a fusion of copper and sterling silver [1] which could be made into a range of items normally made in solid silver. [2]

2024年8月12日 · The term “Sheffield Plate” denotes a silver-plating technique in which a base metal item and at least one strip of silver are melted together and rolled into a sheet. This sheet is then hand-hammered into the desired final shape.

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2009年7月14日 · Old Sheffield silver is often in remarkably good condition with little or no bleeding (copper showing through). This is because it is the unique property of Sheffield plate that it is sterling silver over copper (not pure silver, as is the case with both close plate and electroplate).

2020年2月21日 · How to value Sheffield silver plate by looking at its marks and how it is made. Plus, learning the history of Sheffield silver plate will help you identify it

Old Sheffield Plate, or OSP for short, is the name given to silver plate made from a fusion process in the late 18th and early 19th century, before the invention of electroplating. A brief history of silver plating may be of some help.

Learn the difference between Sheffield plate and sterling silver, uncover historical insights, and get expert tips on identifying genuine Sheffield silver through hallmarks, craftsmanship, and chemical tests.

Sheffield plate, in metalwork, articles made of copper coated with silver by fusion. The technique was discovered about 1742 by Thomas Boulsover, a Sheffield (Yorkshire, Eng.) cutler, who noted that the combination of fused silver and copper retained …

The Sheffield plate industry was characterized by a large number of firms, which were constantly changing their names as new partners were brought in or as smaller firms were acquired by more prosperous larger companies. Most of them made silver as well as plated goods.

Attention has been strictly confined to the marks and makers of wares in which the coating of silver was rolled upon copper and which now commonly go by the name of "Old Sheffield Plate" to distinguish them from those made by the more modern process mentioned above.