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 Replies: 30 / Views: 3,669 |
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Pillar of the Community
United States
1204 Posts |
So I got my milestone 100 post and was suggested I do a contest. Thanks to everyone in varieties for your patience with my posts and all my questions. I really have tried to learn.  So far I haven't found much, but I will send either a Lincoln Wheat cent minor lamination error coin or a Wheat cent BIE error coin to the winner at the beginning of August. Winners choice. So my favorite Wheat cent re-punched mint mark variety coin has bronze disease. See link http://goccf.com/t/376392My contest is - Find a similar green copper coin. Take a photo. Treat the coin as best you know how. Take a photo of result of treatment. Post the pictures with directions of procedure to this contest.  Maybe we will all learn what can and can't be done. I'll choose a winner (subjective I know, but its my contest, LOL). |
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Pillar of the Community
United States
4680 Posts |
Congrats on 100 posts and the interesting challenge!
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Pillar of the Community
United States
3281 Posts |
Congrats sheldius! Very interesting! I'll try to participate once I get back to my temporary housing.
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Pillar of the Community
United States
1008 Posts |
OK, I have 2 cents (no pun intended) to show: 1. 1950-D LWC with green horrendous damage:    2. 1949 LWC with green grass/dirt? Probably buried at one point:    I'm going to try cleaning it with coca cola and show you the results tomorrow.  Edited by CoinHunter17
07/02/2020 4:41 pm
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Pillar of the Community
United States
1008 Posts |
RESULTS:   I decided not to do thw 1949 LWC cuz there wasn't enough "green stuff"  Thanks for this thread and congrats on your milestone! The coke did one heck of a difference. Most of the damage is part of the metal and can't be taken off, but everything else was gone. Wish me luck!  Edited by CoinHunter17
07/03/2020 5:04 pm
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Pillar of the Community
United States
3281 Posts |
Here is my attempt to clean a 1977 D cent with Mineral Oil and scrubbing: Coin Before:  Coin After:  |
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Pillar of the Community
United States
3281 Posts |
When does this challenge actually end?
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Pillar of the Community
 United States
1204 Posts |
Thank you both for entering the contest. Both are interesting results.
Contest ends July 31st.
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Pillar of the Community
United States
1204 Posts |
Coinhunter21, I wonder if its the carbonic acid (what give it bubbles) or the phosphoric acid that works on the copper chlorides. Be interesting to see if basic seltzer water does the same. I have one of the soda streams, so maybe I'll try that and post the results to compare. SilverCents, that must have be some very careful scrubbing. People please keep  and posting. |
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Pillar of the Community
United States
3281 Posts |
Cola actually follows that stereotypical "acid" comment because of the carbonic acid. Pretty sure that's what caused it. I'm surprised how quickly it took effect though. I would think it would take at least a few days to cause such corrosion.
It was indeed, very difficult to get in between the columns.
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Pillar of the Community
United States
1008 Posts |
SC nailed it. The carbonic acid causes the chemical reaction to remove the corrosion. It takes 12 hours to complete.
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Pillar of the Community
United States
1204 Posts |
Only 12 days left. Hurry up and post if you want to help me celebrate my 100.
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Pillar of the Community
 United States
1969 Posts |
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Pillar of the Community
United States
1204 Posts |
Thanks for that. A catcus needle? Wow. Still looks nice. Is that a DDO or just MD? |
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Pillar of the Community
United States
1969 Posts |
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Pillar of the Community
United States
1204 Posts |
Today is the last day to enter. Only 3 so far.
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Replies: 30 / Views: 3,669 |
Posted 07/01/2020 4:50 pm
