Agree. Some type of environmental damage or residue. The discolored part was probably exposed to something while the remainder was covered/protected. This discoloration couldn't occur during the minting process, so it can't be an error.
My first glance at the picture I thought: What is that, old gold that was struck with a flat die on one side?
Sadly, not nearly so interesting...
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@coinbuf said:
Just post mint damage, paint or glue or some type of crud.
Agree. The discoloration is round so I'm thinking it might be some kind of sticker that disintegrated over time and left that dark residue.
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"Paper money eventually returns to its intrinsic value---zero."----Voltaire
"Everything you say should be true, but not everything true should be said."----Voltaire
Answers
Its a valuable invisible coin. Worth millions.
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Hopefully you can view the picture now
Agree. Some type of environmental damage or residue. The discolored part was probably exposed to something while the remainder was covered/protected. This discoloration couldn't occur during the minting process, so it can't be an error.
My first glance at the picture I thought: What is that, old gold that was struck with a flat die on one side?
Sadly, not nearly so interesting...
@OneGoodCoin .... Welcome aboard... I agree with the above diagnosis... No numismatic premium. Cheers, RickO
Agree. The discoloration is round so I'm thinking it might be some kind of sticker that disintegrated over time and left that dark residue.
Worry is the interest you pay on a debt you may not owe.
"Paper money eventually returns to its intrinsic value---zero."----Voltaire
"Everything you say should be true, but not everything true should be said."----Voltaire