Seal (device)

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This article is about the authentication means. For other uses, see Seal.

A seal is an impression printed on, embossed upon, or affixed to a document (or any other object) in order to authenticate it, in lieu of or in addition to a signature. Only in the case of a dry seal the imprint is made as a relief resulting from the greater pressure on the paper where the high parts of the seal touch; in all other cases a liquid or liquified medium (such as ink or wax) is used, allowing the choice of another color than the paper's.

The word is also used as the generic term to describe the devices used to make such impressions, such as (signet) rings.

Wax seal on an envelope
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Wax seal on an envelope

Contents

[edit] Seal as impression

Pine resin seal on vellum tag or tail of an English deed dated 1638.
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Pine resin seal on vellum tag or tail of an English deed dated 1638.

The use of seals, in wax (sealing wax), in lacquer or embossed on paper, to authenticate documents, is a practice as old as writing itself. Seals of this nature were applied directly to the face of the document or attached to the document by cords in the owner's, or to a narrow strip of the document sliced and folded down as a tail but not detached from the document. This helped maintain authenticity by not allowing the reuse of the seal. If a forger tried to remove the seal in the first case, it would break. In the other cases, although the forger could remove the seal intact by ripping the cords from the paper, he'd still have to separate the cords to attach it to another document, which would destroy the seal as well because the cords had knots tied in them inside the wax seal. Most governments still attach seals to letters patent. While many instruments required seals for validity (i.e. the deed or covenant) it is rather uncommon for private citizens to use seals anymore.

Seals were also applied to letters and parcels to indicate whether or not the item had been opened since the seal was applied. Seals were used both to seal the item to prevent tampering, as well as to provide proof that the item was actually from the sender and is not a forgery. To seal a letter, for example, a letter writer would compose the letter, fold it over, pour wax over the joint formed by the top of the page of paper, and then impress a ring, metal stamp, or other device. Governments would often send letters to citizens under the governmental seal for their eyes only. These were called letters secret. Seals are no longer commonly used in this way, except for ceremonial purposes.

Official seal of Ft. Sill Apache
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Official seal of Ft. Sill Apache

The most common uses of the seal today are:

  1. to certify that a person has given an oath or acknowledgement, see notary public
  2. to certify the correctness of a copy of a record maintained by a court or other government agency.

[edit] Seal as device

Seals were used in the earliest civilisations and are of considerable interest in archaeology. In ancient Mesopotamia seals were engraved on cylinders, which could be rolled to create an impression on clay e.g., as a label on a consignment of trade goods. From Ancient Egypt seals in the form of signet-rings of kings have been found. In the Indus Valley Civilisation, rectangular seals were used to label trade goods and also had other purposes.

[edit] Seals in East Asia

See also Chinese seal
A Baiwen name seal, read up-down-right-left: Ye Hao Min Yin (lit. "Seal of Ye Haomin")
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A Baiwen name seal, read up-down-right-left: Ye Hao Min Yin (lit. "Seal of Ye Haomin")

Known as yinzhang in China, dojang or ingam in Korea and inkan or hanko in Japan, ink seals have been used in East Asia as a form of written identification since the invention of writing. Even in modern times, seals are still commonly used instead of handwritten signatures to 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 name of the person or organization represented, but they can also bear a poem or a personal motto. Sometimes both types of seals, or one large seal that bears a name and a motto, 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 a personal seal.

East Asian seals are carved from a variety of hard materials, including wood, soapstone, 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 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 works of art and history.

Because seals are commissioned by individuals and carved by artists, every seal is unique, and engravers often personalize the seals they create. The material of seal and the style of the engraving are typically matched to the personality of the owner. Seals can be traditional or modern, conservative or expressive. Seals are sometimes carved with a figure on the owner's zodiac animal on the top of the seal. 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 works of calligraphy. All traditional paintings in China, Japan, Korea, Vietnam, and the rest of East Asia are watercolor paintings on silk, paper, or some other surface that the red ink from seals can adhere to. East Asian paintings often bear multiple seals, including one or two seals from the artist, and the seals from the owners of the painting.

East Asian seals are the predecessors to block printing.

[edit] Signet rings

Signet rings, generally bearing a coat of arms, are made by intaglio engraving, either in metal or gems (generally semiprecious). Agate is a frequent material, especially carnelian or banded agate like sardonyx; the banding make the impression contrast with the ground.

Metal signet rings can also be cast, which is cheaper but yields a weaker material.

The wearing of signet rings (French: une chevalière, from the word chevalier which means knight) is a longstanding tradition among nobles in European and some other cultures. In contemporary usage, the signet ring is typically worn on the little finger of either the right or left hand (depending on the country), although some countries have different customs (French and German noblemen wear it on the ring finger of their left hand; Swiss wear it on the ring finger of their right hand). The ring may either be worn facing up or facing toward the palm, the latter position sometimes indicating that the person is married.

Because it's used to attest the authority of its bearer, the ring has also been seen as a symbol of his power, which is one explanation for its inclusion in the regalia of certain monarchies. After the death of a pope, the smashing of his signet ring is a prescribed act clearing the way for the sedevacancy 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.

In the United Kingdom, signet rings are typically worn on the left hand of the bearer and tend to be cast of gold. However, there has been a trend to assume arms in the British isles given the recent surge of popularity in geneology, and so many wearers are actually not entitled to bear arms legally.

[edit] Ecclesiastical seals

The use of a seal by men of wealth and position was common before the Christian era, so naturally high functionaries of the Church would adopt the habit as soon as they became socially and politically important. An incidental allusion in one of St. Augustine's letters (217 to Victorinus) lets us know that he used a seal. The practice spread and it seems to be taken for granted by king Clovis at the very beginning of the Merovingian period (Monum. German. Histor.: Leg., II, 2).

Later ecclesiastical synods require that letters under the bishop's seal should be given to priests when for some reason they lawfully quitted their own proper diocese. So it was enacted at Chalon-sur-Saône in 813. Pope Nicholas I in the same century complains that the bishops of Dôle and Reims had contra morem sent their letters to him unsealed (Jaffé, "Regesta", nn. 2789, 2806, 2823). The custom of bishops possessing seals may from this date be assumed to have been pretty general. At first they were only used for securing the document from impertinent curiosity and the seal was commonly attached to the ties with which it was fastened. When the letter was opened by the addressee, the seal was necessarily broken. Later the seal served as an authentication and was attached to the face of the document. The deed was thus only held to be valid so long as the seal remained intact. It soon came to follow from this point of view that not only real persons like kings and bishops, but also every kind of body corporate, cathedral chapters, municipalities, monasteries etc., also required a common seal to validate the acts which were executed in their name.

During the early Middle Ages seals of lead, or more properly "bullae" (from the Latin for lead), were in common use both in East and West, but except in the case of the papal chancery, these leaden authentications soon went out of favour in western Christendom and it became the universal practice to take the impressions in wax. In England hardly any waxen seals have survived of earlier date than the Norman Conquest. In the British Museum collection the earliest bishop's seals preserved are those of William of St. Carileph, Bishop of Durham (1081-96) and of St. Anselm, Archbishop of Canterbury (1093-1109).

The 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 Cardinal Camerlengo to obtain possession of the Fisherman's Ring, 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. Thus we are concisely told: "There died in this year Robert de Insula, Bishop of Durham. After his burial, his seal was publicly broken up in the presence of all by Master Robert Avenel." (Histor. Dunel. Scrip. Tres., p. 63). Matthew Paris gives a similar description of the breaking of the seal of William, Abbot of St. Albans, in 1235.

[edit] Figurative uses

[edit] Metaphorical use

The expression "Seal of Approval" refers to a formal approval, regardless whether it involves a seal or other external marking, by an authoratitive person or institute.

It is also part of the formal name of certain quality marks, such as:

[edit] See also

[edit] Sources and external links

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