How to read a British silver hallmark

Britain has been marking silver since the thirteenth century, which makes a British hallmark the oldest form of consumer protection still in daily use. Nothing in ceramics comes close — a pottery factory printed whatever it liked, which is why dating a backstamp is a matter of stacking floors rather than reading a table. It is also, for anyone trying to work out what an object is, the most informative thing on it. A dinner plate might be anonymous; a hallmarked dinner plate can be pinned to a city and a single year.

The current system is set out in the Hallmarking Act 1973, and it is an offence to sell an article as gold, silver, platinum or palladium in the UK without one.

The four marks in a British silver hallmark

Punch	What it certifies	What it does not tell you
Sponsor’s mark	Who submitted the piece for assay	Not necessarily who made it
Standard mark	The metal — sterling, Britannia, a millesimal number	Nothing about age or value
Assay office mark	Which office tested it	Not where the piece was made
Date letter	The year it was assayed	Nothing until you know the office

Read them left to right if you like, but the order on the piece varies, and the order in which you should think about them does not.

1. The sponsor’s mark. Two or more initials in a shaped surround. This is whoever submitted the article for assay — usually the maker, sometimes the retailer who commissioned it. It is the mark that gives you a name, and only by looking the initials up in the assay office’s register.

2. The standard mark. What the metal is. On English sterling this is a lion walking with one paw raised, the lion passant. It says .925 and nothing else: not who made it, not when. What the lion passant means goes through the standard marks properly, including the higher Britannia standard and the several lions that are not this one.

3. The assay office mark. Which office tested the metal. A leopard’s head is London, an anchor Birmingham, a castle Edinburgh. The assay office marks covers the four that are open and the several that closed.

4. The date letter. A single letter in a shield. The letter, the typeface and the shape of the shield together give one year, and the combination is different at every office — which is why a Birmingham table will misdate a London piece. Silver date letters explains how to use them without that trap.

Read the office mark before the date letter

This is the single most common mistake, and it is made by people being careful.

The date letter is meaningless on its own. Every office ran its own alphabet, in its own fonts, in its own shields, independently of the others until 1975. U is a different year in London than in Sheffield, and there is no way to know which table to open until you have identified the office.

So the sequence that actually works is:

1. Standard mark — is this even silver?
2. Office mark — whose table do I need?
3. Date letter — which year, in that table?
4. Maker’s mark — whose initials, in that office’s register?

Skip step two and you will get an answer. It will be precise, confident and wrong, and nothing about it will look wrong.

What a short set of marks means on silver

Four punches is the full English set. Fewer is worth thinking about rather than worrying about.

• Three marks, no date letter. Since 1999 the date letter has been optional in the UK, so a modern piece may legitimately have none. On an obviously old piece it is a different question.
• Marks that look cut about. A strip of marks let into a piece from somewhere else is a known fraud, called transposed or let-in marks. Breathing on the area sometimes shows a faint outline where the inserted panel was soldered in — the solder and the body cool at different rates and the condensation clears unevenly.
• A bright line of solder crossing a mark. Usually a repair: a handle or a foot replaced. The mark can be perfectly genuine while the part beside it is not original, and that is a different problem from a fake.
• A lid whose marks disagree with the body. A marriage. Two objects that have been together long enough to look like one.
• Words rather than punches. STERLING or .925 spelled out is usually American, and American silver carries no compulsory date mark at all — which is why an American piece can be unambiguously silver and still impossible to date from its marks.

Reading a worn hallmark

Most hallmarks that look illegible are not.

Take the piece somewhere dim and hold a torch almost flat against the surface, so the light rakes across the punches rather than falling onto them. The raised edges throw shadows and the shapes come back. A phone torch held by someone else, at the shallowest angle you can manage, is usually enough. This is the standard trade technique and it works because a punch is an indentation a fraction of a millimetre deep — flat light lands in it evenly and erases it.

Then photograph it and enlarge the photograph. A phone at its closest focus, pinched to zoom, beats squinting every time, and it gives you something you can compare against a table side by side.

Do not polish first. Polishing removes metal, and the metal it removes first is the raised detail inside a punch. An over-polished hallmark is gone permanently, and it takes a good deal of the value with it. Patina in the recesses is evidence of age, not dirt.

A worked example, start to finish

Say a caster carries, in a row: AB in a rectangle, a lion passant, a crown, and a U in a shaped shield.

The lion says English sterling — the metal is at least 92.5% silver, tested and certified.

The crown says Sheffield. It also, on its own, says the piece is earlier than 1975, because that is when Sheffield changed its mark to a rose.

Only now can you open Sheffield’s date letter table. You look for the cycle that uses that shield shape with that typeface, find the U in it, and read off the year. Had you opened London’s table at the start you would have found a U there too, in a different year, and stopped.

AB then goes to Sheffield’s register of sponsors’ marks for a name.

Four punches, four separate questions, answered in the right order.

What a hallmark cannot tell you

It certifies the metal, the office, the year and the sponsor. It is silent on everything that actually sets the price: the form, the weight, the quality of the chasing, the condition, whether it is one of a pair, and what the market has recently paid for something like it.

That last one is the only evidence of value there is, and it comes from sold lots rather than from marks. What an auction result actually says is about reading those figures — because an estimate, a hammer price and a realised price are three different numbers and only one of them is a fact.