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Burnished

Numismatic Burn markBurnishing

burnished strike
Term where planchets were burnished at the mint prior to striking.
burnishing ...

 


burnished die - In 2005, the US Mint began a new finish for some of their coins known as satin finish. To achieve this, they burnished the dies by blasting them with tiny glass and steal beads.

Burnished
A US Mint treatment given to proof dies that imparts a glossy surface with a buffing wheel. PROOF dies were burnished prior to STRIKING. A second negative connotation is a coin "burnished" after striking.

Burnished
This word has two distinct meanings in the world of numismatics, so you have to consider the context in order to discern the correct meaning.

Burnished
Given a glossy surface by a buffing wheel. PROOF dies were usually burnished prior to STRIKING. A coin "burnished" after striking would be considered impaired.

burnished blank or burnished die - treatment of a coin blank or die to give it a special slightly sandy or polished look. Sometimes burnishing is done with chemicals or by special polishing.

In a positive sense, Proof planchets are burnished before they are struck -- a procedure done originally by rubbing wet sand across the surfaces to impart a mirror like finish.

Well honestly that doesn't mean anything, tool marks can easily be burnished out by a competent machinist. But for the sake of argument let's just consider for second that this coin really does weigh 9g, this seller really has found a uniface coin! ...

American Eagle Proof Coins undergo a specialized minting process, which begins by manually feeding burnished coin blanks into presses fitted with special dies.

This term has both a positive and a negative context: In a positive sense, Proof planchets are burnished before they are struck. The procedure was done originally by rubbing wet sand across the surfaces to impart a mirror-like finish.

Struck on a problematic planchet with areas of heavy porosity surfaces burnished to hide same I 1857-S VF-35. Medium S with date well below center I 1858 AU-50. Some mint lustre remaining I 1858-S VF-30. Repunched mintmark I 1859 EF-45.

If polished marble is protected with floor finish, the finish must be buffed or burnished and periodically replaced to keep the surface protected and looking good.

The term "proof" refers to a specialized minting process that begins by manually feeding burnished coin blanks into presses fitted with special dies.

Also Known As: Mint State, Satin Finish, Burnished
Examples:
If I say I have an Uncirculated coin dated 2008, I might be describing either a coin that is in Mint State, or a coin that has a burnished appearance, ...

The coins were found in association with the complete base and lower/middle wall of a small imitation Black Burnished ware jar (21 sherds). The coins were identified by C P Barclay, Simon Holmes and Lucy McCartney and the pottery by J D Hill.

Coins which have been polished, soldered, holed and repaired, used as jewelry, re-engraved or burnished, or which have other problems should always be specifically described as such, no matter what their grade level.

But while the silver dollar may have burnished America's image, it did little to provide an immediate solution to the nation's coinage needs: The coining press couldn't cope with its size and heft and broke down after fewer than 1, ...

The devices on these specimens usually are not frosted while the fields lack the depth of mirror normally associated with Proofs. In fact, the fields are characterized by heavy die polish, the planchets likely not burnished before striking.

See also: Coin, Mint, Dollar, Proof, Silver

Numismatic Burn markBurnishing

 
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