It suffered some sort of environmental damage after it left the mint. I'm guessing heat but it could be many different chemical contacts as well....
At least you started your response with "My guess.." Usually incorrect info will be corrected. Sometimes nicely and sometimes it is rather rude....
To consolidate some of the previous posts and past info on Acetone. Acetone will remove/loosen most organic material stuck to the coin Acetone...
The reverse looks like like someone was playing with a metal lathe and removed the reverse. It is not a mint error.
I'm pretty certain it's a lamination
It is not an error
If it's authentic, you found a valuable coin, even with the hole. I don't see any immediate authenticity flags, but I have very little experience...
Well worn die. You'll see lots of this on dimes and nickels in the early 80's. It's almost, more unusual to find one that is nicely struck.
The answer from Rickmp above is correct. If you find the right buyer, you might get a few dollars above face for a wide margin. I have a few...
No easy (i.e., inexpensive) way to tell. I have a few 1983-85 set aside that have a distinctive yellow color, which was during the time period...
No, it's a plating bubble/blister. Early Zinc cents are notorious for them. Occasionally, the show up as long streaks. It doesn't have any...
Thanks Doug. I picked up most of my information from people like you 15+ years ago. Got tired of cleaning and rarely finding anything good, but...
There used be to a couple chat groups dedicated to cleaning ancients. You generally outlined the main methods. I preferred soaking in distilled...
Hard to tell from the photo, but it looks like it might have been hit/damaged causing the A to spread out. It is not a mint error
You've invested a little $ and a lot of time. You're return has been knowledge. It is difficult to put a monetary value on knowledge, but I...
Nothing is doubled based from what I can see in the picture. If you can provide a closeup of the areas you think are doubled, that would help...
I'm guessing it the water would get into any looser areas around the verdigris and through expansion and contraction, loosen it further. It won't...
Sorry, but it's just a worn dime. FYI - It would help if you mention why you think the coin might be an error. Then there will be a much better...
I just used the books as an example. I don't know if they would reference your coins.
You basically have to have ALL the steps showing. There may be specialized instances that a very small amount can be missing, but one of the FS...
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