As @paddyman98 said, it's environmental damage. Nothing more. Some sort of corrosion. The "letters" you see are results of the corrosion, or...
the It looks like damage after it left the mint. Is there anything on the variety Vista of the Doubled Die site? Those sites are your friend. If...
Extraordinary claims require extraordinary proof, but your coin looks very interesting. I'm leaning towards No. The rims don't seem to be...
If you don't already have one, go out and buy "The Guidebook to United States Coins" Read through that and you'll really be addicted. Best...
generally, acetone will only work on organic junk stuck to the coin. If the actual metal in the coin has reacted, acetone won't do anything....
I understand what you’re saying and see it on CT but most (not all) of the time it comes down to an inexperienced collector questioning the...
You'll pick it up. First, start by forgetting what you've learned on YouTube. I'm sure there is some useful, factual info, but it's filled with...
It was the one in Boston that had the window problems (John Hancock Tower)
You are correct, it is a 1982 copper large date. It is not rare. I strongly recommend you avoid the source that said it was valuable. They...
It also looks like a LD to me
Nice ones. We always tell people that MADs aren't worth a premium, but they never post anything like these. I like the weakness on the rev of...
Just to put this into perspective. Assuming the 1982 P and D are regular copper Large dates, the US mint made 21 Billion (BILLION with a B) 83,...
I am assuming that the area in question along the rim is RECESSED. If this is the case I would consider it a chipped die, but wouldn't get into...
Looks like a strike through (the obverse opposite the missing letters is complete, which would rule out a planchet defect). Value? Probably 25...
It's PMD. Notice the scrape marks at the rim and where you showed it in the first pic. Now look at the rest of the coin. Lots of dings and...
It sounds like you scale only weighs to 0.1 grams which could lead to rounding errors, and that can be compounded if the scale isn't calibrated....
@TraceIzKong616 If you look at the obverse (heads side) you can where the metal has been displaced over the B in LIBERTY. This was caused when...
In the past, coins like the one struck on a Canadian quarter, have had "help" from creative mint employees. Your coin is definitely been damaged...
Another observation that may or may have any relevance. The stamp looks like it's been there for a while, but the letter style looks more modern....
It looks like a filled die error. Material, usually grease and other particles, gets stuck in the letters and other parts of the design causing...
Separate names with a comma.
