Sterling silver vs silver plate: how to tell them apart

Look at the marks first. STERLING, 925 or a full British hallmark with a lion passant means solid sterling silver (92.5% silver). Marks such as EPNS, EP, Silver Plate or a maker's name with imitation shields usually mean a thin layer of silver over a base metal. If there are no marks, wear patterns and weight give strong clues.

By the Antique ID team · Updated 2026-10-13

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Two very different things that look alike

Sterling silver is an alloy of 92.5% silver, usually with copper for strength, and it is the same metal all the way through. Silver plate is a base metal object, typically copper, brass or nickel silver, covered with a thin skin of silver. When both are new and polished they can be hard to tell apart, which is why marks matter so much.

The difference matters for value. A sterling piece always has a meaningful metal value on top of any collector interest. Most plated wares are valued only as decorative or useful objects, with notable exceptions: fine Old Sheffield Plate, important Victorian electroplate by leading firms, and designer pieces.

Marks that mean solid silver

• A British hallmark: a lion passant (England), a thistle or rampant lion (Scotland), a crowned harp (Ireland) or, from 1999, a fineness number such as 925, together with an assay office mark. See British silver hallmarks.
• STERLING or 925: in the United States, the National Gold and Silver Stamping Act allows the word sterling only on articles containing 925 parts per thousand of silver, with a small tolerance (four parts per thousand, ten where solder is included in the test).
• COIN: in the US, at least 900 parts per thousand. Earlier American silver may simply carry a maker's name.
• 800, 830, 835, 900 and similar numbers: continental European standards. German silver after 1888 shows a crescent moon and crown with the number; see Silberstempel. French silver carries an assay office mark such as the Minerva head; see poinçons de l'argent.

Marks that mean plate

• EPNS: Electro Plated Nickel Silver. The Silver Society names it the most common imitation mark. Nickel silver, also called German silver, is a copper, nickel and zinc alloy; the Museum of Fine Arts, Boston's materials database notes that it contains no silver.
• EP (electroplated), Silver Plate, Silver Plated, Silverplate.
• A maker's name with small shields containing initials, stars, heads or letters. These pseudo-hallmarks imitate the look of a British hallmark but include no assay office mark and no standard mark.
• US marks with words like "plate" or "quadruple": US law requires plated items that use any fineness word for gold to say plainly that they are plated, and forbids the words sterling and coin on plated silver.

Old Sheffield Plate and electroplate

Before electroplating, the cheaper alternative to silver was fused plate. The Victoria and Albert Museum describes how the Sheffield cutler Thomas Boulsover found in the 1740s that silver and copper could be fused by heating under pressure, rolled into laminated sheet and worked like silver. The industry flourished for about a hundred years until it was superseded by electroplating in the 1840s. Electroplating deposits silver onto a finished object in a chemical bath; the V&A's collection includes an 1857 electroplated nickel silver teapot by Elkington & Co. of Birmingham, the firm most associated with the process.

Old Sheffield Plate often has no marks at all, or only a maker's name. Clues include a visible seam where sheets were joined, a copper edge showing where the silver layer is worn or where rims were not covered, and an applied silver panel set in to take engraving. The Silver Society points out that neither Sheffield plate nor electroplate carries silver hallmarks.

Clues when there are no marks

None of these clues is proof on its own. The magnet test only works in one direction: silver is not magnetic, but neither are copper, brass or nickel silver. Acid kits should be avoided on anything you care about, and the Silver Society warns that they may only detect surface silver, so a plated piece can pass. A specialist dealer, an assay office or a lab with X-ray fluorescence can analyze metal without harming it.

What drives value

For sterling, start with weight and condition, then design, maker and age. Matching sets, rare forms and pieces by sought-after makers earn far more than their metal value. Monograms, repairs, dents and heavy polishing reduce value. For plate, look for quality of design, maker, condition of the plating and completeness of a set; replating usually lowers collector interest in antique pieces.

If you are unsure what you have, photograph the marks and the whole piece and scan them with Antique ID for an identification and an estimated value range. An estimate is not an appraisal. For pieces that look important, or before selling a large service, ask a silver specialist or qualified appraiser.

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