The spot is contamination that got on the coin and caused what you see. It is not a raised "O", there were no letters that were used at the time of mintage that look like that.
The little black spot in the center had a little solid or semi-solid contaminant on it. for many years. This probably happened inside a mint set. The surface is affected around this epicenter as it is chemically active. The coin is FB or near FB which might be why it was saved in the first place and the spot may be why it was spent (assuming you found it in circulation).
This coin should clean up pretty nicely with a soak in acetone but the center dark spot is much more difficult to ameliorate.
The coin appears to be still unc or more likely a super slider but better pictures are needed to tell for "sure".
It has been impossible to find an AU of this date in circulation since about 1990.
The coin is otherwise unremarkable that I can see.
If the surface is actually raised I guess it could be a planchet error. De-laminating
I have a Susan B Anthony that has a de-lamination around the eye. I call it a black eyed Susan.
@Nemo said:
I'm new on this board, I had no idea what sensitive individuals y'all are. My original question still stands though?
My original answer stands, but you want a different one. It is the result of surface contamination. A sneeze or a droplet of spittle or some other liquid. The raised ring is "carbon" contamination.
@cladking said:
The little black spot in the center had a little solid or semi-solid contaminant on it. for many years. This probably happened inside a mint set. The surface is affected around this epicenter as it is chemically active. The coin is FB or near FB which might be why it was saved in the first place and the spot may be why it was spent (assuming you found it in circulation).
This coin should clean up pretty nicely with a soak in acetone but the center dark spot is much more difficult to ameliorate.
The coin appears to be still unc or more likely a super slider but better pictures are needed to tell for "sure".
It has been impossible to find an AU of this date in circulation since about 1990.
The coin is otherwise unremarkable that I can see.
@Nemo... Welcome aboard. Your dime has contamination that has resulted in that appearance.... as others have stated above. No numismatic premium. Cheers, RickO
@ErrorsOnCoins That reddish orange color looks like the copper core may be bleeding through areas of the CN clad layers that are too thin or non-existent. Is this possible? We need the error experts to weigh in.
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
Not an error- As others have said it’s a contamination issue
Retired Collector & Dealer in Major Mint Error Coins & Currency since the 1960's.Co-Author of Whitman's "100 Greatest U.S. Mint Error Coins", and the Error Coin Encyclopedia, Vols., III & IV. Retired Authenticator for Major Mint Errors for PCGS. A 50+ Year PNG Member.A full-time numismatist since 1972, retired in 2022.
Comments
And that's why you don't sneeze on your coins.
not sure what sneezing has to do with it, but it's a raised O not a surface blemish.
Sorry but either way it is worth face value.
Young Numismatist • My Toned Coins
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post title is in very poor taste!
A self made-up variety name that happens to be tacky too, nice.
10-4,
My Instagram picturesErik
My registry sets
A bead of nasal juice?
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DR. Pimple popper candidate....
Paper money eventually returns to its intrinsic value. Zero. Voltaire. Ebay coinbowlllc
I say PMD... a little too perfect for nasal juice.
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Roosevelt had a melanoma by his left eye, and died from a cerebral hemorrhage in 1945. True story!
I'm new on this board, I had no idea what sensitive individuals y'all are. My original question still stands though?
The spot is contamination that got on the coin and caused what you see. It is not a raised "O", there were no letters that were used at the time of mintage that look like that.
The little black spot in the center had a little solid or semi-solid contaminant on it. for many years. This probably happened inside a mint set. The surface is affected around this epicenter as it is chemically active. The coin is FB or near FB which might be why it was saved in the first place and the spot may be why it was spent (assuming you found it in circulation).
This coin should clean up pretty nicely with a soak in acetone but the center dark spot is much more difficult to ameliorate.
The coin appears to be still unc or more likely a super slider but better pictures are needed to tell for "sure".
It has been impossible to find an AU of this date in circulation since about 1990.
The coin is otherwise unremarkable that I can see.
Mr. D., seems this needs it's close up.
If the surface is actually raised I guess it could be a planchet error. De-laminating
I have a Susan B Anthony that has a de-lamination around the eye. I call it a black eyed Susan.
It is residue from long ago biological contamination. It is a raised "drop" that has dried and led to surface toning/corrosion.
My original answer stands, but you want a different one. It is the result of surface contamination. A sneeze or a droplet of spittle or some other liquid. The raised ring is "carbon" contamination.
Thank You
@Nemo... Welcome aboard. Your dime has contamination that has resulted in that appearance.... as others have stated above. No numismatic premium. Cheers, RickO
@ErrorsOnCoins That reddish orange color looks like the copper core may be bleeding through areas of the CN clad layers that are too thin or non-existent. Is this possible? We need the error experts to weigh in.
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
Not an error- As others have said it’s a contamination issue