Silver Plate vs. Sterling: How to Tell the Difference

Step 1: Look for a fineness mark

Check the piece for a purity number or the word sterling. Any of these indicates solid silver:

• 925 — sterling silver, 92.5% pure. The international standard.
• 958 — Britannia silver, a higher British standard.
• STERLING or STER — the same 92.5% claim, spelled out. Common on American pieces.
• 800 or 900 — lower-purity continental and coin silver, still solid.

Find one of these with no plating words nearby, and you are very likely holding solid silver. Our page on the 925 sterling silver mark covers the variations. If there is no fineness mark, continue.

Step 2: Look for plate marks

Plated pieces usually announce themselves, though in abbreviations that were more familiar in 1900 than today:

• EPNS — electroplated nickel silver. The most common plate mark on flatware.
• EPBM — electroplated Britannia metal, a plated pewter-type alloy.
• A1 — a plating-quality grade, often beside EPNS. Not a silver mark.
• SILVER PLATE, PLATE, or EP — plating stated outright.
• Quadruple plate / triple plate — American marketing terms for heavier electroplate, common on 19th-century hollowware.

Any of these means the piece is plated, whatever else is stamped beside them. If you find neither fineness nor plate marks, move to the symbols.

Step 3: Check for British hallmarks

A row of small pictorial stamps — a walking lion, a leopard’s head or anchor, a letter in a shield — indicates the piece was assayed in the United Kingdom. The lion passant in particular was only struck on tested sterling silver, which makes a genuine British hallmark stronger evidence than a bare 925 stamp.

Be aware that Victorian plate makers imitated this look with rows of pseudo-hallmarks. Compare your marks against our UK hallmark system reference or the complete guide to British hallmarks — if there is no lion passant and no fineness mark, suspect plate.

Step 4: Read the physical clues

Unmarked pieces still leave evidence:

• Wear-through: the most reliable clue. On plate, the coating wears off at high points — spoon-bowl backs, fork tines, tray edges, embossed decoration — exposing brassy yellow or coppery pink base metal. Solid silver stays silver-gray no matter how worn.
• Color: sterling has a slightly warm, soft white color; nickel-based plate reads colder and grayer, especially side by side.
• Weight and sound: silver is dense and rings with a clear sustained tone when tapped; plated base metals often sound duller. This is suggestive, not conclusive.
• Seams and rolled edges: plated hollowware sometimes shows base metal at seams, rims, and solder joints where the plating is thinnest.

Step 5: Ignore the magnet test

The magnet test is the most repeated piece of advice on this subject and the least useful. Silver is not magnetic — but neither are copper, brass, nor the nickel-silver alloy under most plating. A piece that ignores a magnet could be sterling or could be plated brass; the test cannot tell them apart.

The only thing a magnet establishes is that a strongly attracted piece has a steel or iron core, which rules out solid silver. Treat “passes the magnet test” in a listing as marketing, not evidence.

Step 6: When to get a professional test

If the marks are absent or ambiguous and the piece might be valuable, have it tested. Two options:

• XRF (X-ray fluorescence): a non-destructive scan that reads the surface alloy in seconds. Many jewelers and bullion dealers offer it free or for a small fee. Note that XRF reads the surface, so on thick plate a jeweler may also test a filed spot or an inconspicuous edge.
• Acid test: a drop of testing acid on a small scratch shows whether silver is present below the surface. Slightly invasive, so it is done on a hidden spot — and best left to a professional on anything you care about.

For inherited sets or larger collections, a professional appraisal is worth the cost before selling anything for scrap.