Silver Marks and Hallmarks: Free Reseller Identification Guide

Quick answer: STERLING and 925 generally point toward sterling fineness, while EPNS and SILVER PLATE identify plated material. A mark is a starting clue, not stand-alone authentication.

Common silver marks at a glance

Guide explaining Sterling, 925, 800, 835, 900, EPNS, silver plate and coin silver marks — These are simulated mark impressions for recognition and education. They are not photographs of authenticated objects and should not be used to authenticate a piece by appearance alone.

What real marks look like

Marks are usually much smaller, less even and harder to read than a reference drawing. Photograph the whole mark first, then enlarge the image for research.

Close-up photograph of a 925 mark stamped on a silver necklace component — **1. A photographed 925 mark.** The tiny stamp is visible on a jewelry component, but the photograph alone does not test the metal. Photo by Chatsam, cropped to 1,280 pixels by Wikimedia Commons, CC BY-SA 3.0. Source.

Close-up photograph of a Nathaniel Mills British hallmark row from Birmingham in 1845 — **2. A complete British hallmark group.** Read the marks together: maker or sponsor, standard, assay office and date information work as a system. Photo by Charles J. Sharp, resized by Wikimedia Commons, CC BY-SA 4.0. Source.

Close-up photograph of worn Birmingham marks on a nineteenth-century silver thimble — **3. Worn marks on a curved object.** Partial strikes, wear and the shape of an object can make a legitimate mark difficult to read. Photo by Birmingham Museums Trust, Teresa Gilmore / Portable Antiquities Scheme, CC BY-SA 2.0. Source.

Compare structure, not just appearance. A similar lion, letter or set of initials is not enough. Match the entire group against an authoritative reference for the correct country, office and date cycle.

What common marks may tell you

Mark	What it may indicate	Seller caution
STERLING, STER. or 925	Generally indicates a 925-parts-per-thousand silver standard.	Check the complete mark and the item. A stamp can be copied, altered or applied to only one component.
800, 835 or 900	Numerical fineness marks used for silver standards in a number of countries.	Do not call these sterling. Preserve the exact fineness in the description and research the country and hallmark system.
EPNS	Electroplated nickel silver: a silver coating over a nickel-silver base alloy.	EPNS is not solid silver. Nickel silver itself is a copper-nickel-zinc alloy and contains no silver unless plated.
EP, EPBM or electroplate	Usually identifies an electroplated item; EPBM commonly means electroplated Britannia metal.	Expand only abbreviations you can verify. Photograph the mark and describe the visible base metal where wear exposes it.
SILVER PLATE or SILVERPLATE	A silver coating over a base-metal object.	Do not shorten this to silver or sterling in the title. Plated objects can still have collectible value by maker, pattern and form.
COIN or COIN SILVER	A historic U.S. standard term generally associated with silver below sterling fineness, commonly around 900.	Research the maker and era. The word coin is not, by itself, an assay result or exact date.
Maker or sponsor initials	Can identify the firm or person associated with submitting or producing the piece.	Initials alone do not establish silver content. Match the exact font, shield shape and companion marks.
Date letter or assay-office symbol	In formal hallmark systems these may help identify where and when an item was assayed.	Read the complete group of marks. A letter by itself can be a pattern, model or factory code instead.

Do not turn every number into a purity mark. Pattern, model, patent, inventory and registration numbers can also appear on metalware. Interpret a number in the context of the complete mark and a documented hallmark system.

Read the full hallmark, not one symbol

A formal British hallmark provides a useful model for careful reading: the compulsory group includes a sponsor's mark, a fineness mark and an assay-office mark. A date letter may also be present, but it is optional on modern UK work. Other countries and periods use different systems.

Photograph every mark together before separating individual symbols.
Record the exact letters, numbers, punctuation, shield shapes and symbols.
Identify the country's hallmark system before assigning a maker or date.
Match the exact mark version, not merely similar initials.
Check whether the mark belongs to the object, a removable component or a later repair.

Common reseller traps

Mark or description	What sellers should know
WEIGHTED STERLING	The exterior may be sterling while the base is filled with cement, plaster or another material. Do not use the total object weight as silver weight.
STERLING HANDLE	A knife or serving piece may have a hollow sterling handle attached to a stainless or base-metal blade. Describe the components separately.
IS	Often appears as part of an International Silver Company mark on American silverplate. It does not mean “is silver.” Research the complete company mark and pattern.
A1, AA or QUADRUPLE PLATE	These generally refer to plating quality or deposit, not solid-silver fineness. They remain silverplate terms.
90 or 100 on European flatware	Some numerical marks on plated sets describe the amount of silver used across a production batch, not 90% or 100% silver fineness.
SHEFFIELD PLATE or MADE IN SHEFFIELD	Do not assume this means Old Sheffield Plate. Later electroplate made in Sheffield can carry Sheffield wording; construction and maker research matter.
958 or 999	These can indicate Britannia-standard or fine silver in appropriate hallmark systems. Verify the full mark before using either description.

Screening clues are not proof

Magnet: strong attraction suggests a magnetic base metal, but lack of attraction does not prove silver. Many non-silver alloys are also nonmagnetic.
Wear: exposed yellow, coppery or gray base metal can indicate plating, but dirt, solder and repairs can confuse the appearance.
Tarnish: silver can tarnish, but color and polish response are not reliable purity tests by themselves.
Acid testing: can damage the object and requires correct technique, fresh solution and safe handling. Do not perform a destructive test on an important piece without understanding the risk.
XRF or professional assay: appropriate professional testing provides stronger evidence when value or certainty justifies it.

What may make a silver or plated piece worth researching

Metal content is only one part of resale value. Before buying, research the exact object rather than assuming all sterling is profitable or all plate is worthless.

Maker and exact pattern: recognized firms and discontinued patterns may have replacement or collector demand.
Object type: unusual serving pieces, complete sets, decorative hollowware and useful replacement pieces can outperform common singles.
Completeness: lids, liners, inserts, original boxes and matching components can materially affect buyer interest.
Condition: plating loss, deep scratches, dents, monogram removal, repairs and missing parts can reduce value.
Weight and construction: distinguish solid, weighted, filled and hollow-handled construction before estimating metal value.
Sold evidence: compare the same maker, pattern, piece and condition. Asking prices do not establish what buyers have paid.

A practical sourcing order: read every mark, identify solid versus plated construction, check maker and pattern, inspect condition and completeness, then compare sold results before deciding what the piece is worth to you.

Photographs buyers need

The full object from several angles and an accurate scale or measurements.
A sharp close-up of the complete mark, then tighter images of tiny symbols.
Wear-through, repairs, monograms, dents, scratches and missing components.
For flatware, both sides of the handle and the working end; for hollowware, the underside, rim, handle joints and interior.

Use the most accurate claim you can support

If the item is marked 925 but has not been professionally tested, show the mark and state what you actually verified. Avoid presenting an uncertain maker, date or purity as fact.

Evidence	Safer description	Avoid
Clearly marked STERLING or 925; consistent research	“Marked Sterling” or “Marked 925”; add maker only when the complete mark matches	“Solid sterling guaranteed” without adequate verification
Marked 800, 835 or 900	State the exact mark and documented country standard	Calling it sterling
Marked EPNS or silver plate	Silverplate or EPNS, followed by maker, pattern and form when verified	Using “silver” alone in a way that implies solid silver
No reliable purity mark	Silver-tone or unverified metal, with visible marks shown	Guessing sterling from color, tarnish or a magnet test

Research sources

Federal Trade Commission: Jewelry Guides — U.S. truth-in-advertising guidance for precious-metal descriptions.
British Hallmarking Council: Hallmarking Guidance Notes — official fineness standards and hallmark structure.
Sheffield Assay Office: UK Hallmarks — sponsor, fineness, assay-office and optional date marks.
Sheffield Assay Office: Mark Identification — why exact initials, typeface and shield shape matter.
Online Encyclopedia of Silver Marks: Numbers on Silverplate — examples showing why some numbers on plated pieces are not fineness claims.
eBay Jewelry Authenticity Guarantee: metal-purity reference — eBay's published silver fineness terminology and testing notes for eligible jewelry.
Replacements, Ltd.: identification tips — information useful when researching maker, pattern and piece type.

Hallmark laws and terminology vary by country and period. This guide is an identification starting point, not an assay or legal determination.