Is this pmd or errors?
Sonnydew420
Posts: 57 ✭
Got these out of the laundry mat coin machine wondering if anyone knows anything
hing about them..
0
Sonnydew420
Posts: 57 ✭
Comments
Environmental damage
PMD
2003-present
https://www.omnicoin.com/security/users/login
Then what are the streaks running on an angle
Just a stain
2003-present
https://www.omnicoin.com/security/users/login
Just stained coins from the environment. Spending money.
Take a minute to just think about it before posting. You pulled two completely different quarters from the same place, with the same characteristics…the chance that they would both be the same type of mint error and then somehow ended up in the same machine at the laundromat is effectively zero. You’d probably have a better shot at being struck by lightning and then winning the lotto if you survived.
Nothing is as expensive as free money.
Out of the laundromat coin machine... There's your answer
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That's your table top -
"When they can't find anything wrong with you, they create it!"
Looks almost as bad as the quarters I get out of the machine at the car wash.
Just handling wear and PMD.... staining... Cheers, RickO
Such streaking is very commonly seen with environmental damage. The streaks are part of the coin, as a result of the rolling flat of the metal sheets which are used to make coins. This causes different parts of the metal have slightly different chemical compositions, and thus are slightly more or less susceptible to chemical reaction. This is perfectly normal and not a result of some kind of mint error.
It is essentially the same process that is used to etch designs onto metal surfaces, the production of etched circuit boards, or the intricate crystalline patterns that are only revealed in a slice of meteorite when it is etched with acid. Only it happened by accident, in a "natural" environment.
In effect, the chemical agents revealed the "streaking" that was inherently present within the metal before the etching took place. All coins of the same type would have the potential to create such streaks, if placed under similar conditions. We see the exact same effect also in "wood-grain-toned" coins which, while highly desired by collectors, are likewise not considered in any way a "mint error".
It only becomes a "poorly mixed alloy mint error" when the streaks are distinctly different coloured metal and thus visible in a mint-fresh, uncorroded coin.
Roman emperor Marcus Aurelius, "Meditations"
Apparently I have been awarded one DPOTD.
Post mint damage