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British Hallmarks

Copyright © David Boettcher 2006 - 2015 all rights reserved.

I started my pages about hallmarking to document information about imported watches, which is not readily available in the standard references such as Bradbury and Chaffers. However, I realised that many people with a watch that they have perhaps been given or inherited don't have ready access to these standard works, so on this page I show some examples of the British hallmarks that were found in any watch cases that were hallmarked before 1 June 1907, and which continued to be used in British manufactured watch cases after 1907.

I can't (for copyright reasons apart from anything else) reproduce the information in Bradbury or Chaffers, but I hope the examples here will help you read the hallmarks in your own watch. If you want some help, don't hesitate to email me, but do try to send me a clear picture or sketch of the mark you need help with.

London, sterling, 1860/61, Richard Oliver
Click image to enlarge

There are lots more examples on my British hallmarks examples page, but let's make a start with the example of the hallmarks in the picture here, just to get a feel for what a set of British hallmarks looks like. The first thing to note is that there are four distinct marks.

Starting at the top the first mark is a walking lion with raised right forepaw. This is the "lion passant" which indicates that the metal is sterling silver. Below this is a leopard's head, the "town mark" of the London Assay Office together with the date letter "e" for 1860/1861 At the bottom the sponsor's mark R.O in rectangular shield, the mark of Richard Oliver, first registered 16 February 1859.

Assay and Hallmarking

Let's now have a look at the four parts of a British hallmark in more detail. Watch cases made in Britain from silver or gold should by law have been subjected to "assay" (which simply means "to test") to determine the purity of the metal, and provided they are of the required standard, stamped with marks showing at least the following four things:

  1. Town mark - showing at which assay office the article was tested and hallmarked.
  2. Standard mark - the tested and guaranteed minimum fineness of the metal.
  3. Date letter - a mark which shows when the item was marked.
  4. Sponsor's mark - a mark showing who submitted the item for hallmarking.

If the watch case was hallmarked between 1784 and 1798 there should also be a fifth mark, a duty mark of the sovereign's head. Watches were made exempt from this duty in 1798 to enable English watch manufacturers to better compete with foreign made products, so the duty mark shown between 1784 and 1890 in tables of hallmarks in Bradbury and other standard references is not found on watch cases. The duty on all other gold and silver plate was abolished in 1890, and consequently the sovereign's head ceased to be impressed on assayed articles.


You might find a letter "F" in an oval shield like the one shown here signifying Foreign manufacture if the watch case was imported and hallmarked between 1867 and 1887. I have never seen one of these marks in a watch case so if you do find one, please let me know - don't get it mixed up with an "F" date letter which will have a different shaped shield around it, remember that this F mark will be in addition to the date letter. After 1 January 1888 imported watch cases were no longer allowed to be marked with the usual form of British hallmarks, so this mark was no longer applicable either.

Town Marks

Each assay office has its own unique office or town mark to show where the item was assayed. The exception to this is the London Assay Office. It is often said that the leopard's head is the town mark of the London office, but this is not strictly true, only if struck with no other town mark does the leopard's head show that the item was hallmarked in London.

Amongst the most familiar town marks are:

Note: In describing the leopard's head as the town mark of the London Assay Office I am following the practice of standard works such as Bradbury and Chaffers, but in reality the leopard's head was and remained the standard mark - the London Assay Office didn't have its own unique town mark. The leopard's head was struck along with the lion passant by the old offices of Chester, Exeter, Newcastle and York from 1720 for some time after the sterling standard was reintroduced. It was only the new offices of Sheffield and Birmingham that used the lion passant alone as the standard mark. So strictly I should say that when the leopard's head is found on its own without a separate additional town mark it can be inferred that the item was hallmarked in London.

The early form of the leopard's head looks suspiciously like a lion, because the medieval heralds term for a lion shown passant guardant, i.e. looking towards the viewer, was "leopart", which was used in the Act of 1300 by Edward I, which became rendered into English as "leopard". The depiction of this creature gradually changed over the centuries so that it eventually looked like a leopard. From 1478 until 1821 the leopard was pictured wearing a crown, since then he has been without the crown or mane.

It might be thought strange that Birmingham, set in the middle of the England and about as far from the sea as you can get, would use an anchor for its symbol. This is said to go back to 1773 when silversmiths from Birmingham and Sheffield petitioned Parliament for their own assay offices so that they wouldn't have to send items to London to be marked. The petitioners held meetings in The Crown and Anchor public house off The Strand in London. Each town adopted one of these signs as its mark and they tossed a coin to decide which; Sheffield got the crown and Birmingham the anchor. From 1773 the Birmingham and Sheffield Assay Offices were authorised to assay and mark silver. Birmingham was authorised to assay and mark gold in 1824, using the anchor town mark for both gold and silver. Sheffield was authorised to assay and mark gold in 1903 and then used two town marks - the crown for silver and the rose for gold. Use of the crown on gold was reserved for the standard mark of 22 carat gold

The emblem of Glasgow can be traced back to the legend of Saint Mungo, the founder and patron saint of the city of Glasgow.

After 1 June 1907 very different town marks were used for imported watches, which you can read about on my page about Import Hallmarks.

Standard Marks

Although hallmarks are very interesting in their own right and can tell us a lot about the history of an item, the original reason for hallmarking and the item of principal interest to the original purchaser was the "fineness" of the metal, i.e. how much gold or silver is actually in the alloy. This is indicated by the "standard" mark. The standard mark does not show the actual gold or silver content, but shows that the proportion of gold or silver meets or exceeds a legally defined minimum standard.

There are two standards for silver in Britain. Sterling silver, the most widely used, contains at least 11 ounces and 2 pennyweight of pure silver in the pound troy, making it at least 92.5% pure silver. The new standard of Britannia, introduced in 1697, contains at least 11 ounces and 10 pennyweight of pure silver in the pound troy, making it at least 95.8333...% pure silver, usually rounded to 95.84%.

Gold purity is measured in carats, where 24 carat gold means pure gold and fineness is measured as a proportion of 24, e.g. 18 carats is 18/24 = 75% pure gold. It is important to note that these proportions are by weight. Because the density of gold is so much greater than other metals the proportions by volume are smaller. The first legal standard for gold in 1300 was 19⅕ carats, which was reduced to 18 carats in 1477 and then raised to 22 carats in 1575, which remains the higher standard to this day. An additional lower standard of 18 carats was introduced at the request of watchmakers in 1798, and then in 1854, again at the request of watchmakers, additional standards of 15, 12 and 9 carat were allowed. The 15 and 12 carat standards did not prove popular and by Order in Council in 1932 they were both replaced by a standard of 14 carat.

From 1544: the lion passant

From the start of hallmarking in England in the year 1300 the standard mark struck on both silver and gold was the leopard's head. The early form of the leopard's head looks suspiciously like a lion, because this is in fact what it is. The Norman-French medieval heralds term for a lion shown passant guardant, i.e. walking and looking towards the viewer, was "leopart". This was stated in the Act of 1300 by Edward I as une teste de leopart, which became rendered into English as "the head of a leopard". In medieval English this mark was sometimes called the "Liberdes Hede" or "Liberd Heed", and sometimes, rather charmingly, the "Catte's Face".

The leopard's head is therefore properly the head of a lion passant guardant, or simply a lion's face. However, it has always been called in English the leopard's head, and the representation has gradually morphed over the centuries to match its name so that it now truly looks like a leopard. Early versions had a full mane and until 1821 the leopard was pictured wearing a crown, since then he has been without the crown or mane.

In 1544 during the reign of King Henry VIII an additional standard mark was introduced, the "lion passant guardant", a lion walking with three paws on the ground and right forepaw raised, his head turned over his shoulder to face the viewer.

The origin of the lion passant mark is a mystery, it was not introduced by statute. It seems most likely that it was introduced when Henry VIII appointed by commission of the Lord Chancellor and Council two men, Matthew Dale and William Knight, to take charge of the London Assay Office as assay masters and touch makers. A struggle between the goldsmiths' and the King for control of the assay office ensued, and it appears likely that the lion passant was the standard mark applied under the direction of the King's assayers, but the leopard's head remained the standard mark applied by the goldsmiths' assayer, so both marks were struck on items marked at the London Assay Office.

During the period 1697 to 1720 sterling was replaced as the standard for silver wares, but not for coins, by the higher Britannia standard, indicated by the marks of a lion's head "erased", a heraldic term meaning that the head has a jagged rather than a straight edge at the neck line, and the figure of Britannia. This was to stop coins being used as raw material for silver wares.

Due to an administrative blunder the Act in 1697 that introduced the higher standard omitted to authorise any assay office other than London to mark it. The Act specified that silver of the new higher standard should be marked with ... the marks of the mystery or craft of the goldsmiths which instead of the leopards head and the lyon shall for this plate be the figure of a lyons head erased and the figure of a woman commonly called Britannia ....

This left the provincial assay offices in limbo. Although it might have been argued that they were authorised to mark the leopard's head by ancient statute, the lion passant had been introduced in 1544 and there was no legislation to require or authorise its use by any office other than London. The 1697 Act made it quite clear that sterling was no longer a legal standard for plate and so the provincial assay offices of Chester, Exeter, Newcastle upon Tyne and York were prevented from assaying any silver until a new Act was "rushed" through in 1701, although Newcastle was at first omitted and had to be made the subject of a separate Act. These Acts authorised and required that the provincial offices strike the marks of the lions head erased and the figure of Britannia on silverwares of the new standard.

When the sterling standard was reintroduced in 1720 the leopard's head and lion passant replaced the lions head erased and figure of Britannia as the standard marks at all assay offices, London and provincial. The leopard's head was struck by the assay office of Chester with a crown until 1809 without until 1839, Exeter with a crown until 1778, York with a crown until the 1850s and Newcastle with a crown until its office closed in 1884. The reason why the provincial offices stopped striking the leopard's head alongside the lion passant is not known. The Birmingham and Sheffield Assay Offices, authorised in 1773, never struck the leopard's head mark.

The lion passant became the most widely recognised hallmark symbol because it was used by all of the English assay offices. Although the town mark, the date letter and the sponsor's mark all varied from place to place depending on which assay office was used, the same lion passant was always present on "good English silver", and also for many years on gold.

From 1544 to 1549 the lion struck by the London Assay Office was shown "passant guardant" and crowned. From 1550 to 1820 the London lion remained passant guardant, but without the crown. From 1822 the London lion passant was no longer shown guardant but instead with his head in profile, looking forward in the direction he is walking. Other English assay offices varied their depiction of the lion. At Birmingham he was passant guardant until 1875 and passant thereafter. At Chester he was passant guardant until 1822, passant from 1823 until 1883, and then passant guardant from 1884 again until the Chester Assay Office closed in 1962.

The lion passant was the legal fineness mark used on all sterling silver in England until 1999, and was also used on 22 carat gold until 1844, but not for the additional lower 18 carat standard introduced in 1798 which was marked with a crown and the number 18. The use of the lion as the standard mark on both silver and gold meant that silver gilt items could possibly be mistaken for gold, so from 1816 an additional sun mark was struck on 22 carat gold. This was discontinued in 1844 when the the lion passant was replaced by the symbol of a crown and the number 22 as the standard mark for 22 carat gold. Since the year 2000 the legal standard mark for sterling silver is the .925 symbol, but the lion passant can still be struck as an additional mark - for an extra charge of course - and I make sure that this traditional mark is struck on my hand made sterling silver buckles.

The standard mark for sterling silver used by the Edinburgh Assay Office was a Scottish thistle, Glasgow a lion rampant, and Dublin a harp crowned.

Date letter - the assayer's mark

The year denoted by the date letter can be confusing because until 1975, when the 1973 Act came into force, the hallmarking year did not run from 1 January. This mark was introduced in 1478 and was at first called the "assayer's mark", because it was intended to be a record of who was responsible for the assay of an item if questions later arose. For this reason it was changed each year when the new wardens were elected and thereby indicates the date when the item was assayed and hallmarked, although this was not its original purpose.

Prior to the Restoration of King Charles II in 1660, the London hallmarking year commenced on 19 May, the Feast Day of Saint Dunstan, Dunstan was born at Glastonbury in about the year 925 and is the first recorded working goldsmith in England. He built a cell near the Abbey of Glastonbury containing a forge where he made censers and crosses, chalices and patens, as well as articles for domestic use. He successively became Abbot of Glastonbury, Bishop of Worcester, Bishop of London and Archbishop of Canterbury. After his death on 19 May 988 he was buried in Canterbury Cathedral, canonised in 1029, and became the patron saint of all good goldsmiths. The London Goldsmiths' Company especially honoured St. Dunstan, subscribing towards the light of St. Dunstan in the Church of St. John Zachary, keeping his day as a holiday, and designating him in their records as "Seynt Dunstan our blessed Patron, Protector and Founder". patron saint of English gold and silversmiths. From the restoration of Charles II to the Monarchy in May 1660 until 1973, the London hallmarking year officially commenced on Oak-apple Day (the King's birthday), 29th May, but the actual date when the new letter was first struck was sometimes later by days, and even weeks, depending on when the new punches were accepted by the Wardens, the letter "s" causing trouble on several occasions because the there is no distinct lower case version of the letter s.

The letter j, a variant of the letter i, was introduced to allow finer nuance in the written word. This bit of obscure information can be useful if you come across a word like "fjord" (a partially submerged Norwegian coastal valley). At first sight most English speakers would stumble on this word, but just imagine the j as an i and you are close to the correct pronunciation of "fee-yord" - it's not exactly the same because the j sound is slightly different to the i sound, but it gets you close. And you can do vice-versa with i for j if you need to.

The point of all this is that the date letter change is nearly half way through the calendar year! So an item marked by the London Assay Office with an "a" which the table in Bradbury indicates is the date letter for 1916 could have been marked at any time from 29 May 1916 to 28 May 1917, or possibly even some time in June.

The date letters used by the London Assay Office to indicate the hallmarking year ran in sequences of 20, starting at the letter "a" and running up to "u", omitting the letter "j". Other offices used the full cycle from "a" to "z".

Why was "j" left out? Well, the letter "j" was only invented in the 16th century, and didn't make its way into common English usage until the 17th century. The Goldsmith's Guild weren't going to change their ways for a new fangled thing like that. Even the hallmarking act of 1973, which did away with the London cycle ending in "u" and allowed the date letters to run up to " z", didn't introduce the letter "j" into London hallmarks - still a bit too modern I guess.

Caution about date letter cycles

Each assay office used its own cycles of date letters, which depended on when the office was set up and the date when new wardens were elected. Because of this date letter tables are unique to each assay office. You cannot use a date letter from one assay office to read a hallmark struck by a different office.

The Glasgow hallmarking year ran from 1st July to 30th June, neatly bisecting the the year. The Glasgow office closed in 1964. The Birmingham office also changed its date letter with the annual election of the wardens on 1st July.

Caution about date letter shield shapes

If you have a gold watch and you look at a table of date letters in a book of hallmarks such as Bradbury's, bear in mind that the shield shapes around the date letters used on gold items were different to those used on silver items and that the tables of date letters usually show only the shield shapes for marks on silver. There is an example of this at London 1883/84 marks on 18 carat gold. There is only one book that I am aware of, Jackson's Silver and Gold Marks, that shows the shield shapes used on gold as well as those used on silver. You are welcome to email me via my contact page if you need help with a hallmark or date letter.

Some Birmingham town mark and date letter shields for silver are also not the same shape as those shown in the published tables, but instead are triangular with curved sides and a point at the base, and sometimes cut top corners. Other assay offices may also have used different shield shapes for watches.

Sponsor's marks

To send an item to the Assay Office to be assayed, a person must register his details with the particular Assay Office. The reason for this is pretty obvious - the Office needs to know who to charge for their services and who to return the items to, and who to prosecute if a criminal offence has been committed. To facilitate this, the Assay Office requires that each registered person have a registered punch mark, called the "Sponsor's mark", which is unique to them. This usually consists of the persons initials set in a "shield", a surrounding shape. If a person has the same initials as someone already registered, the shield of their mark will be made different so that the two marks can be distinguished. Every punch that can be used to impress the mark must be registered.

The sponsor's mark is not necessarily the mark of the person who made the item. This was first officially recognised in law in the 1738 "Plate Offences Act" but had obviously been practice for some time before then.

Punches, shields and escutcheons

Cameo and Intaglio marks
Cameo and Intaglio marks

Marks such as a sponsor's initials of the walking lion passant are usually rendered in "cameo" or "relief". To make the mark the metal around the letter or shape is pressed down by a punch and the letter or shape itself remains at the original surface level, standing out in relief against the metal that has been pressed down. The shape formed by the nose of the punch as an outline around the mark is called the "shield", or sometimes the "escutcheon".

An alternative form of punching is called "intaglio" or "incuse". The shape of a letter or mark is simply pressed or cut into the surface of the metal. This type of mark often has no shield, although sometimes the punch also presses or cuts a shield around the letters or mark.

The sketch here shows the two types of punches for stamping two different styles of sponsor's marks.

The shield shapes around cameo marks, and around incuse marks if they have them, are an important part of the mark. This applies to all the marks, but is especially important for date letters and sponsor's marks where there are lots of basically similar marks that must all be unique. For instance, when I registered my sponsor's mark at the London Assay Office I found that someone with the same initials, DBB, had already registered their mark with a rectangular shield, so I chose to have a shield with angular ends as shown in the picture, which makes this mark unique to me.

Shield shapes around date letters

The shields around date letters are maintained for one cycle of letters such as A to U or A to Z. For the next cycle the case and the font face of the letter is changed, for example from upper case san-serif letters to lower case serif letters. The shield shape is also changed for each cycle to make it even more unique. Different shield shapes were also used for gold and silver, which can cause confusion because often only the shield shapes for silver date letters are shown in reference books. These is more about this below.

The shape of the shield of a sponsor's mark is very important because it is part of what makes each sponsor's mark unique. A sponsor's mark is a compulsory component of the hallmark and comprises the initials of the sponsor's personal or company name surrounded by a shield to form a unique mark. All sponsors' marks are unique and once allocated will never be re-issued to anyone else. When I wanted to register my sponsors mark I found that there was already a mark registered with my DBB initials. By choosing a shield shape with angled ends as shown in the picture, I was able to create a sponsor's mark that was unique to me. Bear this in mind when you are looking at a sponsor's mark, the shield shape is just as important as the letters.

Cautions about using tables of hallmarks

When you first pick up a book of hallmarks such as Bradbury's Book of Hallmarks, you might think that it is easy to use the tables to discover all that you need to know about a hallmark. This is generally true, but there are certain things you need to be cautious about.

London 1883/84 gold
London date letter "H" for 1883/84 from Bradbury and on 18 carat gold

Shield shapes for date letters on gold

The shield shape around the date letter can be confusing if you look in one of the reference books for a date letter on a gold item or watch case. The shield shapes around the date letters used on gold items were different to those used on silver items. The tables of date letters usually show only the shield shapes for marks on silver silver date letters, which often have wavy bottom or top edges. The shields used for the date letter on gold items usually have plain shields, often square or oblong with cut corners, or circular; these are hardly ever shown in the reference books.

The picture here is an example of a London 1883/84 date letter mark on 18 carat gold, with the entry from Bradbury for the same date letter on silver. There is only one book that I am aware of that shows the shield shapes used on gold as well as those used on silver; Jackson's Silver and Gold Marks. You are welcome to email me via my contact page if you need help with a hallmark or date letter.

Some Birmingham town mark and date letter shields for silver are also not the same shape as shown in the published tables but instead are triangular with a point at the base, and sometimes cut top corners. The Birmingham Assay Office told me that the outline around hallmarks for watch cases are not shown in Bradbury and that the marks shown are those used for silver wares and that watch cases often have different shield shapes. However, I have at least one example of Birmingham hallmarks with the "k" of 1909/1910 that does have the same shield shapes as shown in Bradbury, so I think this was principally a nineteenth century practice.

London hallmarks, date letter 1839, earlier leopard

Other punch shapes

The photograph of the London hallmarks shown here has a date letter which is a "Black Letter" capital "D". This is the date letter for the year 1839/40. But the shape of the leopards's head mark is from an earlier cycle of date letters that ended in 1836; the tables in Bradbury's and Jackson's show a much more "leopard like" head for the date letter cycle that began in 1836. Looking at the leopard's head stamped here you could easily be misled into thinking that the date must be 1836 or earlier.

The explanation for this is that all punches that incorporated a date letter were defaced at the end of a date letter cycle. However, individual punches, such as the leopard's head or the lion passant that were not "date sensitive" could continue to be used until they were worn out or considered unusable. So the leopard's head mark shown in the picture here continued to be used after 1836, despite what the tables in the reference books show.

The sponsor's mark LP in a rectangular shield was entered by Lewis Phillips, a London watch case maker first registered at the London Assay Office 27 November 1838, this mark registered 13 May 1839.

Examples of British hallmarks

There is nothing like looking at a few examples to give you an idea of what to look out for when you are trying to read a set of hallmarks. There are lots of examples on my British hallmarks examples page.

If you have any questions or comments, please don't hesitate to contact me via my Contact me page. Back to the top of the page.

Copyright © David Boettcher 2006 - 2015 all rights reserved. This page updated November 2015. W3CMVS.