Doctored/Altered Coins
This is very difficult to detect and can even fool the best of coin experts. When buying any coin of value, buy from reputable dealers.
doctored: a coin that has been cleaned, altered, repaired, or otherwise "improved" to make it more valuable.
dollar: an official U.S. denomination equal to 100 Cents or 1/10 of an Eagle.
Double Eagle: official name for a $20 gold piece.
Doctored - Typically considered a derogatory term. A doctored coin has been enhanced by chemical or other means.
Dollar - A denomination consisting of one hundred cents authorized by the Mint Act of 1792.
Doctored
A coin which has been altered through noticeable, unnatural means. See also; CLEANED, ALTERED, DONE, TOOLED or ARTIFICIALLY TONED.
doctored Term used for a numismatic item that has been enhanced by chemical or other means. Usually, this is used in a derogatory way.
doctored
Term used for acoin that has been enhanced by some means.
dollar ...
doctored
Usually a pejorative reference for a numismatic item that has been artificially (fraudulently) enhanced.
double denomination ...
Done As in cleaned, doctored, repaired. "This coin's been done. It isn't for me.
the series was the first United States regular issue struck in debased silver -- 75% silver and 25% copper. The other two types were struck in the normal 90% silver and 10% copper alloy.) thumbed A term used to describe a coin that has been doctored ...
Following evidence of circulation, graders look at the coin surface to determine if the coin has been altered, cleaned, doctored or otherwise worked on.
A term used to describe a coin that has been doctored in a specific way to cover marks, hairlines, or other disturbances. Often associated with silver dollars, it actually is used on many issues, mainly business strikes.
One very well known US coin expert and dealer has estimated that up to 15% of the PCGS and NGC slabbed pre 1938 coins that pass through his hands have been 'doctored'. Yes, you read that right, these doctored coins have been slabbed by PCGS and NGC.
While you're tempted to try cleaning or doctoring your coin, do so with care. Most coin experts recommend against cleaning coins, and doctored coins can look unnatural. Some collectors will refuse doctored coins.
original
Refers to a coin that has not been "doctored", i.e. cleaned or tampered with post the original minting process.
 See also: Coin, Gold, Dollar, Silver, Mint
  
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