Ancient Near EastSeals were used in the earliest civilizations and are of considerable importance in archaeology and art history. In ancient Mesopotamia carved or engraved cylinder seals in stone or other materials were used. These could be rolled along to create an impression on clay (which could be repeated indefinitely), and used as labels on consignments of trade goods, or for other purposes. They are normally hollow and it is presumed that they were worn on a string or chain round the neck. Many have only images, often very finely carved, with no writing, while others have both. From ancient Egypt seals in the form of , including some with the names of kings, have been found; these tend to show only names in hieroglyphics. Recently, seals have come to light in South Arabia datable to the Himyarite age. One example shows a name written in Aramaic (Yitsḥaq bar Ḥanina) engraved in reverse so as to read correctly in the impression.
Ancient Greece and RomeFrom the beginning of the 3rd millennium BC until the Middle Ages, seals of various kinds were in production in the Aegean islands and mainland Greece. In the Early Minoan age these were formed of soft stone and ivory and show particular characteristic forms. By the Middle Minoan age a new set for seal forms, motifs and materials appear. Hard stone requires new rotary carving techniques. The Late Bronze Age is the time par excellence of the lens-shaped seal and the seal ring, which continued into the Archaic Greece, Archaic, Classical and Hellenistic periods, in the form of pictorial engraved gems. These were a major luxury art form and became keenly collected, with King Mithridates VI of Pontus the first major collector according to Pliny the Elder. His collection fell as booty to Pompey the Great, who deposited it in a temple in Rome. Engraved gems continued to be produced and collected until the 19th century. Pliny also explained the significance of the signet ring, and how over time this ring was worn on the little finger.
East AsiaKnown as ''yinzhang'' () in Greater China, ''injang'' in Korea, ''inshō'' in Japan, ''ấn giám'' (or ''ấn chương'') in Vietnam, seals have been used in East Asia as a form of written identification since the Qin dynasty (221 BC–). The seals of the Han dynasty were impressed in a soft clay, but from the Tang dynasty a red ink made from cinnabar was normally used. Even in modern times, seals, often known as "chops" in local colloquial English, are still commonly used instead of handwritten signatures to authentication, authenticate official documents or financial transactions. Both individuals and organizations have official seals, and they often have multiple seals in different sizes and styles for different situations. East Asian seals usually bear the names of the people or organizations represented, but they can also bear poems or personal mottoes. Sometimes both types of seals, or large seals that bear both names and mottoes, are used to authenticate official documents. Seals are so important in East Asia that foreigners who frequently conduct business there also commission the engraving of personal seals. East Asian seals are carved from a variety of hard materials, including wood, soapstone, sea glass and jade. East Asian seals are traditionally used with a red oil-based paste consisting of finely ground cinnabar, which contrasts with the black ink traditionally used for the ink brush. Red chemical inks are more commonly used in modern times for sealing documents. Seal engraving is considered a form of Calligraphy#Eastern Asian calligraphy, calligraphy in East Asia. Like ink-brush calligraphy, there are several styles of engraving. Some engraving styles emulate calligraphy styles, but many styles are so highly stylized that the characters represented on the seal are difficult for untrained readers to identify. Seal engravers are considered artists, and, in the past, several famous calligraphers also became famous as engravers. Some seals, carved by famous engravers, or owned by famous artists or political leaders, have become valuable as historical works of art. Because seals are commissioned by individuals and carved by artists, every seal is unique, and engravers often personalize the seals that they create. The materials of seals and the styles of the engraving are typically matched to the personalities of the owners. Seals can be traditional or modern, or conservative or expressive. Seals are sometimes carved with the owners' Chinese zodiac, zodiac animals on the tops of the seals. Seals are also sometimes carved with images or calligraphy on the sides. Although it is a utilitarian instrument of daily business in East Asia, westerners and other non-Asians seldom see Asian seals except on Asian paintings and calligraphic art. All traditional paintings in Culture of Taiwan, Taiwan, Chinese painting, China, Japanese art, Japan, Korean painting, Korea, and the rest of East Asia are watercolor paintings on silk, paper, or some other surface to which the red ink from seals can adhere. East Asian paintings often bear multiple seals, including one or two seals from the artist, and the seals from the owners of the paintings. East Asian seals are the predecessors to block printing.
Western traditionThere is a direct line of descent from the seals used in the ancient world, to those used in medieval and post-medieval Europe, and so to those used in legal contexts in the western world to the present day. Seals were historically most often impressed in sealing wax (often simply described as "wax"): in the Middle Ages, this generally comprised a compound of about two-thirds beeswax to one-third of some kind of resin, but in the post-medieval period the resin (and other ingredients) came to dominate. During the early Middle Ages seals of lead, or more properly "Bulla (seal), bullae" (from the Latin), were in common use both in East and West, but with the notable exception of documents ("Papal bull, bulls") issued by the Chancery of Apostolic Briefs, Papal Chancery these leaden authentications fell out of favour in western Christendom. Byzantine Emperors sometimes issued documents with gold seals, known as Golden Bulls. Wax seals were being used on a fairly regular basis by most western royal Chancery (medieval office), chanceries by about the end of the 10th century. In England, few wax seals have survived of earlier date than the Norman Conquest, although some earlier matrices are known, recovered from archaeological contexts: the earliest is a gold double-sided matrix found near Postwick, Norfolk, and dated to the late 7th century; the next oldest is a mid-9th-century matrix of a Bishop Ethilwald (probably Æthelwold, Bishop of East Anglia). The practice of sealing in wax gradually moved down the social hierarchy from monarchs and bishops to great magnates, to petty knights by the end of the 12th century, and to ordinary freemen by the middle of the 13th century. They also came to be used by a variety of corporate bodies, including cathedral chapters, municipalities, monasteries etc., to validate the acts executed in their name. Traditional wax seals continue to be used on certain high-status and ceremonial documents, but in the 20th century they were gradually superseded in many other contexts by inked or dry embossed seals and by rubber stamps. While many Legal instrument, instruments formerly required seals for validity (e.g. deeds or Covenant (law), covenants) it is now unusual in most countries in the west for private citizens to use seals. In Central and Eastern Europe, however, as in East Asia, a signature alone is considered insufficient to authenticate a document of any kind in business, and all managers, as well as many book-keepers and other employees, have personal seals, normally just containing text, with their name and their position. These are applied to all letters, invoices issued, and similar documents. In Europe these are today plastic self-inking stamps. Notary, Notaries also still use seals on a daily basis. At least in Britain, each registered notary has an individual personal seal, registered with the authorities, which includes his or her name and a pictorial emblem, often an animal—the same combination found in many seals from ancient Greece.
PracticesSeals are used primarily to authenticate documents, specifically those which carry some Legal instrument, legal import. There are two main ways in which a seal may be attached to a document. It may be applied directly to the face of the paper or (an ''applied seal''); or it may hang loose from it (a ''pendent seal''). A pendent seal may be attached to cords or ribbons (sometimes in the owner's Tincture (heraldry), livery colors), or to the two ends of a strip (or ''tag'') of parchment, threaded through holes or slots cut in the lower edge of the document: the document is often folded double at this point (a ''Plica (sigillography), plica'') to provide extra strength. Alternatively, the seal may be attached to a narrow strip of the material of the document (again, in this case, usually parchment), sliced and folded down, as a tail or ''tongue'', but not detached. The object in all cases is to help ensure authenticity by maintaining the integrity of the relationship between document and seal, and to prevent the seal's reuse. If a forger tries to remove an applied seal from its document, it will almost certainly break. A pendent seal is easily detached by cutting the cords or strips of parchment, but the forger would then have great difficulty in attaching it to another document (not least because the cords or parchment are normally knotted inside the seal), and would again almost certainly break it. In the Middle Ages, the majority of seals were pendent. They were attached both to legal instruments and to letters patent (i.e. open letters) conferring rights or privileges, which were intended to be available for all to view. In the case of important transactions or agreements, the seals of all parties to the arrangement as well as of witnesses might be attached to the document, and so once executed it would carry several seals. Most governments still attach pendent seals to letters patent. Applied seals, by contrast, were originally used to seal a document closed: that is to say, the document would be folded and the seal applied in such a way that the item could not be opened without the seal being broken. Applied seals were used on letters close (letters intended only for the recipient) and parcels to indicate whether or not the item had been opened or tampered with since it had left the sender, as well as providing evidence that the item was actually from the sender and not a forgery. In the post-medieval period, seals came to be commonly used in this way for Letter (message), private letters. A letter writer would fold the completed letter, pour wax over the joint formed by the top of the page, and then impress a ring or other seal matrix. Governments sometimes sent letters to citizens under the governmental seal for their eyes only, known as letters secret. Wax seals might also be used with letterlocking techniques to ensure that only the intended recipient would read the message. In general, seals are no longer used in these ways except for ceremonial purposes. However, applied seals also came to be used on legal instruments applied directly to the face of the document, so that there was no need to break them, and this use continues.
DesignsFile:Great Seal of Montana.svg, left, The Great Seal of the State of Montana (US) Historically, the majority of seals were circular in design, although ovals, triangles, shield-shapes and other patterns are also known. The design generally comprised a graphic emblem (sometimes, but not always, incorporating heraldry, heraldic devices), surrounded by a text (the ''legend'') running around the perimeter. The legend most often consisted merely of the words "The seal of [the name of the owner]", either in Latin or in the local vernacular language: the Latin word ''Sigillum'' was frequently abbreviated to a simple ''S:''. Occasionally, the legend took the form of a motto. In the Middle Ages it became customary for the seals of women and of ecclesiastics to be given a Vesica piscis, vesica (pointed oval) shape. The central emblem was often a standing figure of the owner, or (in the case of ecclesiastical seals) of a saint. Medieval townspeople used a wide variety of different emblems but some had seals that included an image relating to their work. Sealing wax was naturally yellowish or pale brownish in tone, but could also be artificially colored red or green (with many intermediary variations). In some medieval royal chanceries, different colours of wax were customarily used for different functions or departments of state, or to distinguish grants and decrees made in perpetuity from more ephemeral documents. The matrices for pendent seals were sometimes accompanied by a smaller ''counter-seal'', which would be used to impress a small emblem on the reverse of the impression. In some cases the seal and counter-seal would be kept by two different individuals, in order to provide an element of double-checking to the process of authentication. Sometimes, a large official seal, which might be in the custody of chancery officials, would need to be counter-sealed by the individual in whose name it had been applied (the monarch, or the mayor of a town): such a counter-seal might be carried on the person (perhaps secured by a chain or cord), or later, take the form of a signet ring, and so would be necessarily smaller. Other pendent seals were double-sided, with elaborate and equally-sized Obverse and reverse, obverses and reverses. The impression would be formed by pressing a "sandwich" of matrices and wax firmly together by means of rollers or, later, a lever-press or a screw press. Certain medieval seals were more complex still, involving two levels of impression on each side of the wax which would be used to create a scene of three-dimensional depth. On the death of a seal-holder, as a sign of continuity, a son and heir might commission a new seal employing the same symbols and design-elements as those used by his father. It is likely that this practice was a factor in the emergence of hereditary heraldry in western Europe in the 12th century.
EcclesiasticismEcclesiastical seals are frequently mandorla-shaped, as in the shape of an almond, also known as Vesica piscis, vesica-shaped. The use of a seal by men of wealth and position was common before the Christian era, but high functionaries of the Church adopted the habit. An incidental allusion in one of Augustine of Hippo, St. Augustine's letters (217 to Victorinus) indicates that he used a seal. The practice spread, and it seems to be taken for granted by King Clovis I at the very beginning of the Merovingian dynasty. Later ecclesiastical synods require that letters under the bishop's seal should be given to priests when for some reason they lawfully quit their own proper diocese. Such a ruling was enacted at Chalon-sur-Saône in 813. Pope Nicholas I in the same century complained that the bishops of Dôle and Reims had, "''contra morem''" (contrary to custom), sent their letters to him unsealed. The custom of bishops possessing seals may from this date be assumed to have been pretty general. In the British Museum collection the earliest bishop's seals preserved are those of William de St-Calais, Bishop of Durham (1081–96) and of St. Anselm, Archbishop of Canterbury (1093–1109).
Architects, surveyors and professional engineersSeals are also affixed on architectural or engineering construction documents, or surveying, land survey drawings, to certify the identity of the licensure, licensed professional who supervised the development."What is a PE"
DestructionThe importance of the seal as a means of authentication necessitated that when authority passed into new hands the old seal should be destroyed and a new one made. When the pope dies it is the first duty of the Camerlengo of the Holy Roman Church, Cardinal Camerlengo to obtain possession of the Ring of the Fisherman, the papal signet, and to see that it is broken up. A similar practice prevailed in the Middle Ages and it is often alluded to by historians, as it seems to have been a matter of some ceremony. For example, on the death of Robert of Holy Island, Bishop of Durham, in 1283, the chronicler Robert de Graystanes, Robert Greystones reports: "After his burial, his seal was publicly broken up in the presence of all by Master Robert Avenel." Matthew Paris gives a similar description of the breaking of the seal of William of Trumpington, Abbot of St Albans, in 1235. The practice is less widely attested in the case of medieval layperson, laypeople, but certainly occurred on occasion, particularly in the 13th and 14th centuries. Silver seal matrices have been found in the graves of some of the 12th-century queens of France. These were probably deliberately buried as a means of cancelling them. When King James II of England was dethroned in the Glorious Revolution of 1688/9, he is supposed to have thrown the Great Seal of the Realm into the River Thames before his flight to France in order to ensure that the machinery of government would cease to function. It is unclear how much truth there is to this story, but certainly the seal was recovered: James's successors, William III of England, William III and Mary II of England, Mary used the same Great Seal matrix, fairly crudely adapted – possibly quite deliberately, in order to demonstrate the continuity of government. A related practice of destruction is found among blacksmiths: their touchmark (a stamp used on the hot metal to show who made it) is destroyed upon their death.
Signet ringsA signet ring is a ring bearing on its flat top surface the equivalent of a seal. A typical signet ring has a design, often a family or personal Crest (heraldry), crest, created in intaglio (jewellery), intaglio so that it will leave a raised ( ) impression of the design when the ring is pressed onto liquid sealing wax. The design is often made out of agate, carnelian, or sardonyx which tend not to bind with the wax. Most smaller classical engraved gems were probably originally worn as signet rings, or as seals on a necklace. The wearing of signet rings (from Latin "signum" meaning "sign" or "mark") dates back to ancient Egypt: the seal of a pharaoh is mentioned in the Book of Genesis. Genesis 41:42: "Removing his signet ring from his hand, Pharaoh put it on Joseph (Genesis), Joseph's hand; he arrayed him in garments of fine linen, and put a gold chain around his neck." Because it is used to attest to the authority of its bearer, the ring has also been seen as a symbol of power, which is why it is included in the regalia of certain monarchies. After the death of a Pope, the destruction of his signet ring is a prescribed act clearing the way for the Sede vacante#Vacancy of the Holy See, ''sede vacante'' and subsequent election of a new Pope. Signet rings are also used as souvenir or membership attribute, e.g., class ring (typically bear the coat of arms or crest of the school), as an alternative to one with a stone. One may also have their initials engraved as a sign of their personal stature. The less noble classes began wearing and using signet rings as early as the 13th century. In the 17th century, signet rings fell out of favor in the upper levels of society, replaced by other means for mounting and carrying the signet. In the 18th century, though, signet rings again became popular, and by the 19th century, men of all classes wore them. Since at least the 16th century there have also been pseudo-signet rings where the engraving is not reversed (mirror image), as it should be if the impression is to read correctly. Rings have been used since antiquity as spy identification and in espionage. During World War II, US Air Force personnel would privately purchase signet rings with a hidden compartment that would hold small compass or hidden message. MI9 purchased a number of signet rings from Regent Street jewelers that were used to conceal compasses.Froom, Phil
Figurative uses* Seal of the Confessional (disambiguation), Seal of the Confessional * Record sealing
ApprovalThe expression "seal of approval" refers to a formal approval, regardless whether it involves a seal or other external marking, by an authoritative person or institute. It is also part of the formal name of certain quality marks, such as: * Good Housekeeping Seal of Approval of the Good Housekeeping Institute * Good Netkeeping Seal of Approval
See also* Bulla (seal), a lump of clay molded around a cord and stamped with a seal * Company seal (also known as a Corporate seal), an official seal used by a corporation * Cylinder seal * Golden Bull, a gold seal used by Byzantine Emperors * Keeper of the seal * Great Seal (disambiguation) **Great Seal of Canada **Great Seal of France, used to authenticate constitutional documents of the French Republic **Great Seal of Northern Ireland **Great Seal of the Realm, a British institution for authorising the monarch's official documents a personal signature **Great Seal of Scotland allows the monarch to authorise documents without signing ** Great Seal of the United States used since 1782 to authenticate some documents issued by the United States government **Imperial Seal of Japan, called 菊の御紋 in Japanese, meaning "Noble Symbol of Chrysanthemum" * King of Na gold seal, the first seal in Japan, given by China, discovered in Fukuoka, displayed in the Fukuoka City Museum. * Knights Templar Seal used to validate documents approved by the order * Manu propria * National Seal of Brazil * Notary public (New York)#Seal or stamp * Privy Seal, of England can be traced back to the reign of King John **Lord Privy Seal or ''Lord Keeper of the Privy Seal'' is nowadays one of the traditional sinecure offices of state in the United Kingdom * Public Seal of Hong Kong * Rubber stamp * Seal (East Asia) * Seal of Dartmouth College, used by Dartmouth College of Hanover, New Hampshire, USA. * Seal of Solomon, a legendary magical signet ring said to have belonged to King Solomon * Seal of the President (disambiguation), Seal of the President ** Seal of the President of Ireland ** Seal of the President of Nigeria ** Seal of the President of the Philippines, also called ''Kutamaya'', or Seal of the Noble President ** Seal of the President of the United States * Sealing wax * Seals of the U.S. states * Security seal * Sigillography * Signature * State seals of the Russian Empire
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