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1999 Georgia Coin
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5 posts in this topic

  • Administrator

Hello @Onluwildfirethank you for reaching out to us and sharing an image of your coin. Unfortunately, we are not able to identify or authenticate coins via photos. An in-hand evaluation by the grading team would be required to determine if the coin is genuine. You can learn more about how to submit coins here: NGC Coins | How to submit.

Please let us know if you have any additional questions. Thank you!

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Why? Why do people believe this kind of damage came from the Mint? It didn't. This coin is a damaged piece of junk, nothing more. STOP LOOKING FOR THIS KIND OF JUNK!

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   Welcome to the NGC chat board.

   The blue discoloration on your 1999 Georgia state quarter is corrosion, possibly copper-nickel chloride, from the coin having been exposed to chemicals in the environment, possibly from having been buried in the ground or immersed in chlorinated water, after it left the mint. As such, it is undesirable to knowledgeable coin collectors and worth only its face value of 25 cents.

   Unfortunately, there are many false and misleading articles and videos about coins on the internet, to which you have no doubt been exposed. While NGC does not offer free advice, you may post your questions and photos on the "Newbie Coin Collecting Questions" forum, and we (volunteer forum members) will endeavor to answer them. Please post clear, cropped photos of both sides of the coin about which you have questions.  In the meantime, here are some links to resources from which you can obtain accurate information about actual mint error and variety coins and U.S. coins generally:

Learn Grading: What Is a Mint Error? — Part 1 | NGC (ngccoin.com)

Learn Grading: What Is a Mint Error? — Part 2 | NGC (ngccoin.com)

Learn Grading: What Is a Mint Error? — Part 3 | NGC (ngccoin.com)

Variety vs. Mint Error | NGC (ngccoin.com)

For a comprehensive description of known error types, see error-ref.com.  Other useful sites include doubleddie.com and varietyvista.com.


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Welcome to the forum. I assume the error you are hoping to find is the quarter struck on planchet stock that was intended for the Sacagawea dollar. There were supposedly some of these struck that "escaped" the mint. You will need to have your coin weighed on accurate scales that weigh to at least three decimal places. A normal quarter should weigh between 5.443 and 5.897 grams, with the average being 5.670 grams. A quarter struck on the "experimental" planchet would weigh between 5.9 and 6.3 grams, and would probably be slightly thicker than a normal quarter. 

Your coin looks like an environmentally damaged piece. I would not get my hopes up.

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