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

What Causes Blue Toning On Coins

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Author	Replies: 10 / Views: 399
Coinseller88 Valued Member United States 93 Posts	Posted 09/16/2023 8:01 pm * Edited by Staff to crop and/or rotate images. Please crop and correctly orient images before uploading. * Report this Post to the Staff

Coinfrog Bedrock of the Community United States 81268 Posts	Posted 09/16/2023 8:07 pm There is no simple answer to this. Copper can take on almost any color of the rainbow in different environmental conditions. Report this Post to the Staff
Spence Moderator United States 28375 Posts	Posted 09/16/2023 8:14 pm That is a good question. According to the interwebs, it looks like a mixture of equal parts vinegar and salt will do this, but I imagine the are a bazillion other ways too. "If you climb a good tree, you get a push." -----Ghanaian proverb "The danger we all now face is distinguishing between what is authentic and what is performed." -----King Adz Report this Post to the Staff
Coinseller88 Valued Member Topic Starter United States 93 Posts	Posted 09/16/2023 8:20 pm So there's no way it came from the mint this way Report this Post to the Staff
ijn1944 Bedrock of the Community United States 12940 Posts	Posted 09/16/2023 8:47 pm Environmental toning, yes--exposure over time. The coin didn't leave the striking chamber with that coloration/tint. Report this Post to the Staff
Coinfrog Bedrock of the Community United States 81268 Posts	Posted 09/16/2023 8:57 pm Definitely did not come from the mint looking this way. Report this Post to the Staff
Dearborn Bedrock of the Community United States 22254 Posts	Posted 09/16/2023 10:14 pm When it came out of the mint, it would have been bright and shiny, afterwards, the copper will take on many different colors or tones due to the environment it was in. Collecting since 1972. Learning from then on "Tell me and I forget. Teach me and I remember. Involve me and I learn." - Benjamin Franklin My Dansco 7070 type set coin count: 47/76 My Dansco 7181,7182 Uncirculated American Silver Eagle Albums - 1986 to Present My American Silver Eagle Collection - 1986 to Present My Dansco 8188,8189 Innovation Dollar Albums My Dansco 8176 Eisenhower-Dollar Album My Dansco 8166,8167 Kennedy-Half Dollar Albums My Dansco 8140,8143-8147 Washington-Quarter Albums My Dansco 8125 Roosevelt-Dime Album My Dansco 7112 Buffalo-Nickel Album My Dansco 8113,8114 Jefferson-Nickel Albums My Dansco 8100,8104 Lincoln-Cent Albums Edited by Dearborn 09/17/2023 09:26 am Report this Post to the Staff
Errers and Varietys Bedrock of the Community United States 29814 Posts	Posted 09/16/2023 11:42 pm Environmental factors will depend on how it tones. Errers and Varietys. Report this Post to the Staff
John1 Moderator United States 51615 Posts	Posted 09/17/2023 09:21 am Improper cleaning, IMHO. John1 ( I'm no pro, it's just my humble opinion ) Searched 6.5 +/- Million Cents Since 1971 Report this Post to the Staff
I6609 Valued Member United States 428 Posts	Posted 09/17/2023 10:14 am One thing that I have noticed is after giving a copper coin an acetone bath I will sometimes see those bluish colors you are seeing I'm not saying that is how your coin got the color it has but an observation on my copper wheat cents Report this Post to the Staff
Yokozuna Pillar of the Community United States 4225 Posts	Posted 09/17/2023 10:51 am Any number of factors could have effected the toning, but it may have made a trip through the wash in a someone's pocket. I've read that laundry detergent can cause copper to tone in some light pastel shades. ANA ID: 3203813 - CONECA ID: N-5637 Clean a coin that may be worth collecting? Please DON'T! When in doubt, leave it dirty!! Report this Post to the Staff
	Replies: 10 / Views: 399

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

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