What's up with this dime?

[MintErrors]

I had a person call me about a coin he has. It's a dime which he has had in a drawer for quite some time and is simply interested in knowing what is wrong with the coin. Have a look at this and see if you can determine what this is.

I told the caller that I thought it was post mint damage. He brought up some legitimate questions, so I told him I would post the photos here.

The Obverse looks raised and the center of that raised area looks concave. I don't know of any classic "error" coin that looks like this. I think it's a bit extreme to be some sort of gas bubble after a strike. Normally overheated coins are burned and darker in color.

Any other suggestions?

82-dime-obv.jpg
82-dime-rev.jpg

[mustbebob]

I am guessing here, but I am thinking it is a chemical reaction that may be affecting only the copper and not the outer clad layers. I would think there was something spilled on it, hence the discoloration. Is this area soft or hard?

[MintErrors]

Bob,

Here is the coin owner's response::

Good afternoon Gary, I looked at the post on the website, looks good, thank you.

A gentleman had a thought that the spot was a reaction and a possible gas bubble. His question is if the spot is hard or soft. Well, that made me start thinking. The spot is hard.
Then if it's hollow, then it should weigh the same as all dimes. I weighed ten, all 2.2 grams. This dime is 2.3 grams. Has to be solid. I couldn't post this, as I'm not registered with the website. You may forward it if you want as a response to the gentleman's question. Thank you for your time, I really appreciate it.

[MintErrors]

For the record, you should start a new post of your own. A CONECA moderator will probably delete this entry above. They require each coin have its own post since it will be easier to find at a later date. I highly suggest you delete this entry and create a new post.

[N-6846]

Gary,
I'm new to this and I'm assuming you mean me. This is probably a new topic for a new post and I don't want to go in circles but how would I start a new post?

[MintErrors]

I'm happy to assist.

1. Once you are logged in, go to the FORUMS tab.
2. Choose the appropriate forum to post your coin.
3. Just above the top post to the left is a blue NEW TOPIC button with a PLUS SIGN next to it.
Click on the NEW TOPIC button.
4. You are on your way !

Since you had posted photos on the website, I am assuming you can do that without issues.

CONECA tries its best to keep things in an orderly fashion so the owner of the coin can go back at a later date and find their own information.
If other posters added coins to the original posters post, and the original poster decided to delete their post, any other posts in that thread would probably be deleted as well (if they have permissions to delete their own posts) within the other person's post.

It also helps CONECA understand and know what coin may be incoming for an examination and/or attribution.