What are carbon spots? Good Read!

UrbanDecay04

Disclaimer This is NOT my work!!!

"Spots on coins are another example of bad surface preservation. The coins that are most susceptible to spotting are cents which are made of copper. Copper is a highly reactive metal and it is not unusual to see “carbon spots” on them. They are called carbon spots because many times they are formed from carbon in the air or mishandling by people. Once a carbon spot is in a coin it is there forever and will leave a pit that actually grows deeper over time.

"Even though copper coins are the most common coins to have spots, gold coins sometimes have spots due to the fact that copper was used as an alloy and if there is an area in the coin where the alloys weren’t evenly mixed, a spot can form where there is a concentration of copper."

To read more go to: https://www.christophersrarecoins.com/basics-of-coin-grading-surface-preservation/#:~:text=Copper is a highly reactive,actually grows deeper over time.

Here are 2 good links as well:
1. https://www.coinbooks.org/esylum_v07n16a16.html
2. https://www.ngccoin.com/news/article/1553/copper-spots-copper-nickel-coins

thefinn

Most info is correct.

TomB

I can envision two problems with this type of post.

The first is that you have "signed" it on the bottom with the name and contact information of someone other than yourself. In this case it is the information of the original author of the material. This may lead folks to believe that you are, indeed, Chris Seuntjens and, as such, any reputation that you carry on the boards may be transferred to this person. That includes any good or bad reputation that you have.

The second is that you have copied the entirety of someone else's work and posted it onto a third-party site. Even though there is a citation (a link) at the end, I believe this is generally considered very poor form. Perhaps a sentence or two from the original article might be quoted and then a link to the article left for those who want to read more.

I'm not being picky, but I am being honest.

jmlanzaf

https://www.coinbooks.org/esylum_v07n16a16.html

jmlanzaf

https://www.ngccoin.com/news/article/1553/copper-spots-copper-nickel-coins

jmlanzaf

@UrbanDecay04 said:

@jmlanzaf said:
https://www.coinbooks.org/esylum_v07n16a16.html

Ooh... that's a good one... Do you mind if I implement that link into the OP?

No problem. Not my copyright. Lol

Carbon spots are not of consistent composition. I think they are only called "carbon" spots because they are black.