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Mint luster

Numismatic Mint errorMint mark

Mint luster The sheen or bloom on the surface of an uncirculated numismatic coin resulting from the centrifugal flow of metal caused by the striking of the dies.

 


Mint luster: The dull, frosty, or satiny shine found on uncirculated coins.
Mint mark: A small letter on a coin identifying which of the United States Mint's facilities struck the coin.

Mint Luster - The dull, frosty or satiny shine or finish found on coins, resulting from the centrifugal flow of metal as dies strike the coin blank.
Mint Mark - A small letter that identifies the mint that struck the coin.

mint luster - When an uncirculated coin is struck, a frosty, yet satiny brilliance will be present on the coins surface. These coins will even somewhat reflect light.

Mint Luster
Shiny "frost" on the surface of an uncirculated or mint coin.
Mint Mark
Small letter (or other symbol) indicating which mint the coin was struck at. Read more about Mint Marks here.....

Mint Luster - The "frost" on the surface of an Uncirculated or "Mint State" coin. Caused by a series of microscopic lines formed during the striking process.

Mint Luster
The glossy sheen reflected from the surface of a coin, resulting from the flow of metal caused by the striking dies. At the time of minting, the luster is at its strongest, but may fade over time, become discolored, or spotted.

Original red, mint luster is seldom seen, but natural patinas are very important in determining the coins' value, since copper can take on beautiful and stable surface colorations over the years.

Mint Error
Defective coin produced by a mint.

Mint Luster
Shiny "frost" on the surface of an uncirculated or mint coin.

The action of the shifting tides evidently causes sand to "blast" the surface of some coins, while others protected from this action retain nearly intact Mint luster. Seated Short for Liberty Seated.

mint luster - a frosty, satiny, unique shine found on uncirculated and high grade coins. Mint luster gradually disappears as a coin receives wear and sometimes when toning or tarnishing takes place.

This specimen is strictly Uncirculated with full brilliant mint luster. As is characteristic of all known specimens of this rarity, the U in UNITED STATES is not struck up, and the ICA in AMERICA is not as bold as the balance of the legend.

Very Fine 20, 25, 30 & 35 - No mint luster present. Signifcant wear, however all lettering and devices will be fully readable and well defined.
Extremely Fine 40 & 45 25 - 50% Mint Luster present.

* Uncirculated old coins will have unbroken mint luster ovver both sides, and are, oddly enough, easier to find than Extra Fine and Almost Uncirculated.

The holders are supposed to be excellent for maintaining the condition of a coin and preventing toning of coins and preserving mint luster of silver and copper coins.

Uncirculated: Radiating with the shine of a new coin, mint luster is still present over the entire surface. An 1871 Shield nickel in uncirculated condition shows no signs of wear.

Definition: A BU coin is a coin that has never been circulated, and retains all of its original mint luster. BU stands for Brilliant Uncirculated.

Considerable mint luster will still show in the protected areas. In general, a coin in "Extremely Fine" condition includes a wide range of quality. This ranges from coins with some lustre to those with no lustre, and some wear on the fine details.

Mint luster is above average with several small contact marks as well as one or two moderately heave contact marks. The overall quality of the coin is above average for a mint state coin and has a pleasing appearance.

Coins graded About Uncirculated-53 will have approximately 50% of the original mint luster present and fewer marks than on an About Uncirculated-50 coin.

" This mint luster is created during the actual coin striking process, when the coin dies come into contact with the planchet under extreme pressure. The process causes changes to the metal of the planchet at the molecular level.

For a coin to be uncirculated, all the mint luster must be uniform and unbroken over both sides. Proofs were struck in each year except 1916, and the only standout rarity is the recently discovered 1893/2 overdate.

It’s no better than a Fine', (even though it has mint luster). The Early American Coppers (EAC) collectors and dealers, saw this problem early on and “ ...

This simulated mint luster to the ignorant. Scores of such coins were foisted off on the boobs before a hue and cry ended the practice. Whizzed coins soon became impossible to sell, and the whizzers moved on to greener pastures.

XF-45 (Choice Extremely Fine) - all design details are sharp; some mint luster remains, though perhaps only in "protected areas"
EF-40 (Extremely Fine) - slightly more wear than a "45"; traces of mint luster may show ...

When a team of trained numismatists from one of the coin certification services inspects a coin, they examine the mint luster, the number, placement and depth of bag marks, the strength or weakness of the strike, and other characteristics of the coin.

This is a harsh cleaning technique that uses a wire brush in order to simulate mint luster. This technique was used in the 60’s and 70’s to fool the uneducated buyer. "Whizzed" coins are not certifiable and very difficult to sell.

This weakness in strike can make a high grade (XF or better) coin appear to have more wear than it actually does, in which case the coin's grade must be determined by the amount of remaining mint luster.

Blazer - Refers to a brilliant-white coin that has 100% of its natural mint luster.
Blemishes - Minor nicks, flaws, marks or spots of discoloration that mar the surface of a coin.

Coin must have at least half of the original mint luster. On the obverse her cheek is slightly flat. Traces of wear show in her hair below liberty in the headband. On the reverse traces of wear show on the bow, tips of leaves, and the wheat heads.

There is often some of the mint luster left on the coin. Most of the devices on the coin are clearly defined. For each type of coin, there are different things to look for in determining if a coin meets this demanding grade.

Seaby #3507
Shilling, 1697. S.3507; ESC-1102. William III. Third bust. Original fresh mint luster, silvery gray obverse, reverse toned more deeply but struck up better than is usually ...

The lost "surface" can be the coin’s mint luster or patina which can greatly add to or subtract from the coin’s value and desirability.

About uncirculated. Grade level between extremely fine and uncirculated. Typically, either has full mint sharpness without mint bloom, or has nearly full mint luster with traces of rubbing or enough bag marks to interfere with design details.
Blank ...

About Uncirculated (AU-50) - Has traces of light wear on many of the high points. At least half of the mint luster is still present.

Lightly but evenly worn. All details are very sharp but there may be some slight scratches. There may be some of the original color (mint luster).
Choice Extra/Extremely Fine (XF/EF-45) ...

A polishing of a coin sometimes with an abrasive that leaves a finish that attempts to counterfeit mint luster.
bulged die ...

Choice About Uncirculated 55 (AU55): Only the smallest amount of wear will be found on only the highest points of the design. Most of the mint luster must be evident.

mint luster: The original reflectivity of a coin
mint master: the controller of a mint
mint roll: A common means of distributing coins where a mint stores coins in paper rolls before distributing them to banks ...

In the early 1970's, a technique was developed among dishonest dealers of burnishing their coins on a wire brush wheel. The practice simulated mint luster to the ignorant. "Whizzed" coins are not certifiable and very difficult to sell.

AU - Almost Uncirculated, includes the grades AU50-AU58. Coins that at first glance appear uncirculated but upon closer inspection have light rub or wear and will usually have mint luster still present.

While the coin still has its original mint luster, the physical damage is there. Do you think this is an extreme example?

Uncirculated (UNC): No wear, although it is possible for the design not to be fully struck up in the minting process. Not perfect as there may be bag abrasions and knocks through mass production. The coin should have most of its mint luster ...

These coins do not have pitted surfaces! The action of the shifting tides evidently causes sand to 'blast' the surface of some coins, while others protected from this action retain nearly intact Mint luster.

but, while this peace was being celebrated, a revolt was beginning in Judea that would last past Nero's death, through the Civil Wars of 68-69 AD and into the reign of Vespasian. Peace was tarnished long before our coins lost their mint luster.

See also: Luster, Mint, Coin, Grade, Collector

Numismatic Mint errorMint mark

 
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