A silver object that is to be sold commercially is, in most countries, stamped with one or more silver hallmarks indicating the purity of the silver, the mark of the manufacturer or silversmith, and other (optional) markings to indicate the date of manufacture and additional information about the piece. In some countries, a national assayer's office controls the testing of silver objects and marking of purity.
Hallmarks are applied with a hammer and punch, a process that leaves sharp edges and spurs of metal. Therefore, hallmarking is generally done before the piece goes for its final polishing.
The hallmark for sterling silver varies from nation to nation, often using distinctive historic symbols, although Dutch and UK Assay offices no longer strike their traditional hallmarks exclusively in their own territories and undertake assay in other countries using marks that are the same as those used domestically.
One of the most highly structured hallmarking systems in the world is that of the United Kingdom, (Scotland, England, Wales and Northern Ireland), and Ireland. These five nations have, historically, provided a wealth of information about a piece through their series of applied punches. Since 2015 visually identical UK Hallmarks have been struck in India and Italy by sub-offices of Birmingham and Sheffield Assay Offices respectively:
The series of hallmarks described above are still in use in today.
However, there are two silver hallmarks that have been discontinued:
Since the year 1838, the French assay mark for items made of solid silver is the head of the goddess Minerva in profile. The French have two standards for silver purity or fineness. The higher is 950 parts per thousand, or 95% silver referred to as 1st Standard. The lower grade of silver is 800 parts per thousand, or 80% silver referred to as 2nd Standard. Both standards are marked with the head of Minerva inclusive of a numeral 1 or 2 to indicate the standard.
French silver made for export carries an assay mark in the shape of the head of Mercury, along with a number to indicate the millesimal fineness: "1" for .920, "2" for .840 and "3" for .750.
French silver also is punched with the mark of the maker, by law in the shape of a lozenge, usually with the maker's initials and a symbol.
In the early United States, no national assaying system was adopted, although the city of Baltimore did maintain its own assay office between 1814 and 1830.[ citation needed ] Prior to the general adoption of sterling silver as the standard of purity in 1868, silver was generally obtained from the melting of coins. Since these could vary considerably in purity, from around .750 millesimal fineness to around .900, silver known as "coin silver" varies in purity. Silver at that time was sometimes marked "COIN" or "PURE COIN", but can also be without a standard mark altogether. After the adoption of the sterling standard, pieces were marked with "STERLING", the number "925" or the notation "925/1000".[ citation needed ]
The United States also had no date marking system. Because of this, some companies within the U.S., such as Tiffany, Reed & Barton and Gorham, adopted their own date marking systems.[ citation needed ]
While American manufacturers did not apply assay marks, city marks or date marks, they did apply a maker's mark. This is generally not done today. The old hallmarks were as unique as today's logos, and disputes often arose when one company copied another's stamp.[ citation needed ]
"The words "silver" and "sterling silver" describe a product that contains 92.5% pure silver. Silver products sometimes may be marked 925, which means that 925 parts per thousand are pure silver. Some jewelry described as "silver plate" has a layer of silver applied to a base metal. "Coin silver" is used for compounds that contain 90% pure silver. According to the law, quality-marked silver also must bear the name or a U.S. registered trademark of the company or person that will stand behind the mark." [1]
Between 1867 and 1933, Austria-Hungary and later, Hungary used the crescent moon crowned head of ancient Greek heroine Diana as the hallmarking symbol of legal silver alloys. The head was encircled by a frame, optionally composed of convex, concave and straight lines. One concave line represented 140/1000 fineness, a straight one 150 and a convex one 160. For example, a Diana head within a frame made in the shape of a 5-petal flower represented 5×160/1000 = 800 thousands fineness, a local silver standard commonly used in table forks and spoons. Meanwhile, a hexagonal frame represented 900 fine silver. This same system was also used to frame gold hallmarks.
From 1929, Japan Mint assays and hallmarks the articles made of silver. The hallmarks of Japan Mint have the figure of the national flag of Japan.
The standard circulating coinage of the United Kingdom, British Crown Dependencies and British Overseas Territories is denominated in pennies and pounds sterling, and ranges in value from one penny sterling to two pounds. Since decimalisation, on 15 February 1971, the pound has been divided into 100 pence. Before decimalisation, twelve pence made a shilling, and twenty shillings made a pound.
The English penny, originally a coin of 1.3 to 1.5 grams pure silver, was introduced c. 785 by King Offa of Mercia. These coins were similar in size and weight to the continental deniers of the period and to the Anglo-Saxon sceats which had preceded it.
Sterling silver is an alloy composed by weight of 92.5% silver and 7.5% other metals, usually copper. The sterling silver standard has a minimum millesimal fineness of 925.
The Spanish dollar, also known as the piece of eight, is a silver coin of approximately 38 mm (1.5 in) diameter worth eight Spanish reales. It was minted in the Spanish Empire following a monetary reform in 1497 with content 25.563 g (0.8219 ozt) fine silver. It was widely used as the first international currency because of its uniformity in standard and milling characteristics. Some countries countermarked the Spanish dollar so it could be used as their local currency.
A hallmark is an official mark or series of marks struck on items made of metal, mostly to certify the content of noble metals—such as platinum, gold, silver and in some nations, palladium. In a more general sense, the term hallmark is used to refer to any standard of quality. Not to be confused with responsibility marks that are the marks of the maker.
Assay offices are institutions set up to assay precious metals. This is often done to protect consumers from buying fake items. Upon successful completion of an assay the assay offices typically stamp a hallmark on the item to certify its metallurgical content. Hallmarking first appeared in France, with the Goldsmiths' Statute of 1260 promulgated under Étienne Boileau, Provost of Paris, for King Louis IX.
The fineness of a precious metal object represents the weight of fine metal therein, in proportion to the total weight which includes alloying base metals and any impurities. Alloy metals are added to increase hardness and durability of coins and jewelry, alter colors, decrease the cost per weight, or avoid the cost of high-purity refinement. For example, copper is added to the precious metal silver to make a more durable alloy for use in coins, housewares and jewelry. Coin silver, which was used for making silver coins in the past, contains 90% silver and 10% copper, by mass. Sterling silver contains 92.5% silver and 7.5% of other metals, usually copper, by mass.
Britannia silver is an alloy of silver containing 11 ozt 10 dwt silver in the pound troy, equivalent to 23⁄24, or 95.833% by weight (mass) silver, the rest usually being copper.
This glossary of numismatics is a list of definitions of terms and concepts relevant to numismatics and coin collecting, as well as sub-fields and related disciplines, with concise explanations for the beginner or professional.
The Birmingham Assay Office, one of the four assay offices in the United Kingdom, is located in the Jewellery Quarter, Birmingham. The development of a silver industry in 18th century Birmingham was hampered by the legal requirement that items of solid silver be assayed, and the nearest Assay Offices were in Chester and London. Matthew Boulton and Birmingham's other great industrialists joined forces with silversmiths of Sheffield to petition Parliament for the establishment of Assay Offices in their respective cities. In spite of determined opposition by London silversmiths, an Act of Parliament was passed in March 1773, just one month after the original petition was presented to Parliament, to allow Birmingham and Sheffield the right to assay silver. The Birmingham Assay Office opened on 31 August 1773 and initially operated from three rooms in the King's Head Inn on New Street employing only four staff and was only operating on a Tuesday. The first customer on that day was Matthew Boulton.
The Hallmarking Act 1973 makes up the bulk of modern law regarding the assaying and hallmarking of metals in the United Kingdom. Hallmarking is a way to guarantee the purity of precious metals. Metals are tested and, if they meet a certain minimal purity requirement, are marked with a specified seal. In the United Kingdom, this is done by the assay offices in London, Birmingham, Sheffield, and Edinburgh. The act made business transactions involving unmarked metals illegal. Trading Standards departments are responsible for enforcing the act.
The Dublin Assay Office was established in 1637 to supervise the assaying of all gold and silver throughout the whole Kingdom of Ireland, when the Dublin Company of Goldsmiths was founded by royal charter, re-establishing the medieval Guild of All Saints.
Martelé is a limited hand-wrought production line of silver.
Silver standards refer to the standards of millesimal fineness for the silver alloy used in the manufacture or crafting of silver objects. This list is organized from highest to lowest millesimal fineness, or purity of the silver.
A metallurgical assay is a compositional analysis of an ore, metal, or alloy, usually performed in order to test for purity or quality.
The Eglinton Trophy or Eglinton Testimonial is a Gothic style Sterling silver centrepiece presented by friends and admirers to the 13th Earl of Eglinton to commemorate the medieval re-enactment known as the Eglinton Tournament held at Eglinton Castle, Kilwinning, North Ayrshire in 1839. At 4 foot 8 inch (140 cm) in height and 1600 ounces (45 kg) in weight it is one of the largest and most extravagant trophies of its kind.
The BIS Hallmark is a hallmarking system for gold as well as silver jewellery sold in India, certifying the purity of the metal. It certifies that the piece of jewellery conforms to a set of standards laid by the Bureau of Indian Standards, the national standards organization of India. India is the second biggest market for gold and its jewellery.
The Goldsmiths' Company Assay Office in London is the oldest assay office in the United Kingdom. The company has provided hallmarking services since The Goldsmiths Company was founded in the 14th century. The company received its royal charter in 1327 and ranks fifth in order of precedence of the 12 great livery companies of the City of London.
The Merchandise Marks Act 1887 was an Act of the Parliament of the United Kingdom.
Samuel Kirk was an American silversmith, active in Baltimore, Maryland, and best known for his introduction of repoussé to the United States. He engaged in various partnerships with his sons under the names of S. Kirk and Son and S. Kirk and Sons. In 1979 S. Kirk & Son was purchased by the Stieff Company, which renamed itself Kirk Stieff.