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Lustre

Numismatic LusterLustrous

Lustre
During the minting process, a planchet becomes a coin once it has been struck between two dies. The striking takes place under extreme pressure. It is this pressure which is responsible for the phenomenon known as mint lustre.

 


lustre Alternate form of luster.
lustrous A term used to describe coins that still have original mint bloom.
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Lustre - The bright new tone coins have when they have just been struck resulting from the centrifugal flow of metal caused by striking. Over time through handling and wear coins usually loose this lustre.

Lustre -
The brightness of a coin which results from the way in which it reflects light.

LUSTRE
The sheen or bloom on the surface of an uncirculated numismatic object resulting from the centrifugal flow of metal caused by striking with dies.

Lustre - The brilliant rich colour that coins have when they have just been struck. It is impossible to replace this lustre once it has been lost, but some people will attempt to replace the colour, for profit.

Mint lustre
The shine or bloom found on the surface of an uncirculated coin. The effect is caused by the movement or flow of metal when the planchet is struck in the coining press.
Mintmark ...

Frosty Lustre

Enlarge
211 1880 MS-65. A lovely gem with sharp design details and brilliant, frosty mint lustre. Virtually pristine surfaces with the same die characteristics described by Breen for Proofs.

3 : Lustre: degree of (for silver coins).
4 : Brilliance: degree of (for copper coins). This standard takes the view that if present, brilliance is the most appropriate term to use in relation to the color of a copper coin.

Lustre - This encompasses the brilliance, cartwheel, sheen and contrast of the coin, again taking the normal characteristics of the particular issue into account. Minor (non-hairline producing) cleaning, retoning, friction, etc.

An intense lustre (not mirror-like) caused by striking a coin with sandblasted dies.
frosted devices
Raised elements on coins struck with dies that have received a frosted treatment in their recessed areas.

luster or lustre
In numismatics, the amount and strength of light reflected from a coin’s surface or its original mint bloom. Luster is the result of light reflecting on the flow lines, whether visible or not.
lustrous ...

Mint Lustre
The bloom on the surface on an uncirculated numismatic object resulting from the radial flow of metal caused by striking with dies.

[Α]Π Aplustre and palm-branch.
Æ .6
Aptera, on the north coast, near Cydonia.

[Α]Π Aplustre and palm-branch.
Æ .6
Aptera, on the north coast, near Cydonia.

Mint bloom
Original lustre that is still visible on a coin.
Mint error
Also see: Error ...

Traces of mint lustre may linger amongst the letters of the inscription. (US Grade about XF)
Extremely Fine (EF): Slight wear on high spots on close inspection, and all other detail clear and sharp. Much mint lustre may remain.

1856 LARGE CENT - ALMOST UNCIRCULATED - MINT LUSTRE
By 1839, few people inside or outside the U.S. Mint were satisfied with the large cent design, least of all its creator, Chief Engraver Christian Gobrecht.

Coins which have been polished, whizzed (treated with a wire brush to produce artificial mint lustre), or which have otherwise been subject to processes involving brushing, etching, acid treatment, and the like should be described as such when sold, ...

This ranges from coins with some lustre to those with no lustre, and some wear on the fine details.

Traditionally, metals have certain characteristic physical properties: they are usually shiny (they have "lustre"), have a high density, are ductile and malleable, usually have a high melting point, are usually hard, ...

Mint lustre may be impaired on portions of the design. Numerous small contact marks in groups. May have several detracting scuff marks. The overall quality of the coin is average for a mint state coin, but overall the coin is attractive.

Lustre
Eye Appeal
It then goes onto suggest that by rating an MS coin on a scale of 1 to 5 for each of these factors and adding the total (with double weight given to surface preservation) that you can use the result to determine the MS grade of a ...

Although it is possible for such an original coin to exist, it is unlikely. Also dipping can strip the lustre off of the coin, ...

Description : Arc et goryte orné d'un aplustre entre deux serpents ; dans le champ à droite, le bâton d'Esculape.
N° dans les ouvrages de référence : BMC.98 - Aulock1369 - GC.3948 - SNG. France 51728 ...

Brilliant Uncirculated (BU): Usually implies full mint lustre, with no toning or tarnish, should have no marks or abrasions, although such coins will have come into contact with other coins during production.

Paphlagonia, Sinope AR Drachm. ca 333-300 BC. Head of nymph in triple pendant earring left, aplustre in front, circular border of dots / eagle on dolphin facing left, SINW below, KAIG above tail. SNG Stancomb 772v.
TextObvRev
SNGBMC 1481 ...

The desirability of a coin as evidenced by a combination of toning or lustre, pleasing surface coloration, attractive planchet and other artistic consideration. The asthetic appeal of a voin will vary from viewer to viewer.

mint bloom
The original surface of a newly minted coin (see lustre).
mint mark
A letter or symbol used to denote the mint which produced the coin.

Paphlagonia, Sinope AR Drachm, 5.56 gm.
Obv: Head of nymph Sinope left, hair bound in a saccos; aplustre before .
Rev: Sea eagle l. on dolphin; magistrate IKE_; SIN below.
Ex: Frank Robinson ...

Metals have certain characteristic physical properties: they are usually shiny (they have "lustre"), have a high density For other meanings of density, see density (disambiguation) ...

Luster
The brilliance or reflective shine of a coin. Luster is considered to be one of the four most important factors in the GRADE of a coin. Luster makes up about 30% of the overall grade. Alternate spelling: Lustre
M ...

See also: Coin, Mint, Struck, Obverse, Revers