What U.S coin publishing had bad coin quality problems ?

Hello
Any coin publishing that were known having quality problems ?
Where majority of minted coins were bad and people got frustrated:
- Fingerprints and stains.
- Heavy bag marks.
- Altered surfaces by production chemicals.
- Planchet problems.
- Plating problems.
Europe has some (Southern Europe particularly).
- I know some people did not like 1970 GSA dollars because they had heavy bag marks meaning MS60-62.
- Also 2021 bullion 0,999% silver commemorative Morgans had some issues in quality.
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Comments
There might be some confusion with your terminology. Coins are "issued", not "published".
The GSA silver dollars weren't "issued" in 1970, they were "released from storage". They'd originally been issued a hundred years earlier. And they had damage because they had been issued long ago, were used in circulation back then for a while, then stored under sub-optimal conditions for 90 years.
As for "American coins that are notorious for having problems at the time of their issue", well the original 1982 plated Lincoln cents were... pretty bad, the plating didn't stick and rose up in bubbles and defects after just minimal circulation. Tweaking the composition (apparently by adding a slight amount of copper into the zinc core) helped reduce this considerably. But as a result, finding a nice, un-wrinkled 1982 zinc cent is rare indeed.
Can't really think of any other US series that is known for having a far higher-than-normal portion of its coins issued at sub-par quality.
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Apparently I have been awarded one DPOTD.
Actually, coins are "minted" rather than "published" although most are eventually "issued" or released into circulation. Some series of early US copper coins had surface issues because they were struck on copper planchets imported from England and were exposed to the salt air during their voyage across the ocean.
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So U.S does not have any condition-rarities caused by mint made mistakes on overall coin quality ?
Are modern coins easy to find in MS69-70 ?
Or are some harder to find in above MS-64 ?
Early large cents sometimes had planchet problems.
3CNs often were clashed.
Early nickels had frequent die cracks due to the hard alloy used, until die hardening was improved.
Buffalo nickels in the 1920s often had worn dies.
I don't really call these "mistakes".
It's more like extremely high quality was not a priority,
so they didn't pay the extra cost to create more dies.
I think the mistake is in the suggestion that coins should ideally start out as MS70 (or 69). Circulation coins are made to be used and are produced accordingly.
There are tons of condition rarities but that does not necessarily mean poor quality or "mistakes".
In my years of purchases from the U.S. Mint, I only had to return one coin... An ASE, with an obvious scratch in the obverse field. It was promptly replaced, and the replacement was excellent. Cheers, RickO
The 60's had some planchet problems or sure ...
1971-S blue pack Eisenhower Dollars
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