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Coin cleaning is the controversial process of removing undesirable substances from a coin's surface in order to make it more attractive to potential buyers. The subject is disputed among the numismatic community whether cleaning coins is necessary. Those that argue in favor of cleaning are also in dispute on which methods work best.
This "cleanliness" is a result of the surface of the coin being dissolved by the acid. Dipped coins almost always have a lower numismatic value than when they were in their former "dirty" state, hence most numismatists do not recommend dipping or any other method of cleaning coins as doing so will likely reduce the coin's value. Double Eagle (U ...
While it may seem counter-intuitive, some storage methods can actually damage coins. Soft PVC [ 1 ] and cardboard contain sulfur and other acidic or oxidizing materials. For expensive coins that can be tarnished, collectors should avoid using cardboard folders, paper or plastic bags, certain plastic tubes, and any other storage container that ...
Coin collecting is the collecting of coins or other forms of minted legal tender. Coins of interest to collectors include beautiful, rare, and historically significant pieces. Collectors may be interested, for example, in complete sets of a particular design or denomination, coins that were in circulation for only a brief time, or coins with ...
Some of the methods use heat which may be dangerous to silver tableware such as candlesticks or knife handles. Water trapped in crevices of silver objects can accelerate tarnishing. [15] Single Ingredient – Toothpaste is applied with a clean cloth as a gentle abrasive with a soft bristle toothbrush and rinsed in water. [16]
Protection for coins was historically only available to affluent collectors who stored their coins in custom cabinets. [1] The first attempt at creating an album or folder like structure for coins came in 1929, when The Beistle Company began marketing coin albums. These albums were made of heavy cardstock covered in paper on both sides, with ...
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NGC was founded in 1987 in Parsippany, N.J. by John Albanese, who also founded Professional Coin Grading Service. A majority stake was later purchased by coin dealer Mark Salzberg. Along with CEO Steven Eichenbaum, Salzberg owns the CDN Greysheet, a price guide for coins similar to the Kelley Blue Book. [2]
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