1986 Lincoln Memorial Cent Hey All You Chemist Types, What Might Cause This?

To participate in the forum you must log in or register.

Author	Replies: 4 / Views: 1,021
hockingzig Pillar of the Community United States 1450 Posts	Posted 07/18/2008 9:18 pm I found a 1986 Lincoln Cent with very weird toning.'t show up like it looks to the eye.The best description I can give you is a light mint green. It is evenly coating the coin like it may have been dipped in something but I could not think of anything in my limited knowledge that would give copper a yellow-green/mint-green color from a reaction. Any ideas? p.s. I am going to include the pic even though the color is not accurate at least you can see the coating! Report this Post to the Staff

biggfredd Rest in Peace United States 9104 Posts	Posted 07/18/2008 11:03 pm Natural copper toning is green oxide. I used to have a mint cent that was green on one side and normal on the other. From the pitting, looks like it could have been quickly dipped in nitric acid. That's the stuff they use to test gold plate, the copper core bubbles up green. Report this Post to the Staff
BadThad Bedrock of the Community United States 19930 Posts	Posted 07/19/2008 04:23 am Did someone say green or blue? Lincoln Cent Lover! VERDI-CARE™ INVENTOR https://verdi.care/ Report this Post to the Staff
hockingzig Pillar of the Community United States 1450 Posts	Posted 07/19/2008 3:21 pm Yep! That's the color mine is. Just a weird yellow- green to mint green. Any idea how it got that way? Report this Post to the Staff
BadThad Bedrock of the Community United States 19930 Posts	Posted 07/19/2008 3:32 pm On my coin it's just toning. I can't tell anything from that picture you posted. The toning is mainly caused by reaction of the surface to atmospheric contaminants and storage materials, such as sulfur compounds. Copper is highly reactive and can tone quite beautifully. Check out the Lincoln Lovers Picture thread in the Photography forum for some more beauty! Lincoln Cent Lover! VERDI-CARE™ INVENTOR https://verdi.care/ Report this Post to the Staff
	Replies: 4 / Views: 1,021

To participate in the forum you must log in or register.

All Forums Category: US Coins and Currency Forums Forum: US Modern Coins

The First Dollar, your premier source for bullion and rare coins. See our bullion list on the site and the coin inventory on ebay.

Silver Gold Bull US is the United States leading bullion dealer. We deliver gold coins, gold bars, silver coins, silver bars and precious metals to your door. Order today!

View Last 100 New Topics

Disclaimer: While a tremendous amount of effort goes into ensuring the accuracy of the information contained in this site, Coin Community assumes no liability for errors. Copyright 2005 - 2026 Coin Community Family- all rights reserved worldwide. Use of any images or content on this website without prior written permission of Coin Community or the original lender is strictly prohibited.
Contact Us | Advertise Here | Privacy Policy / Terms of Use

Coin Community Forum

It took 0.19 seconds to rattle this change.