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 Replies: 19 / Views: 3,148 |
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Valued Member
Canada
84 Posts |
I thought this was a Dryer Coin but someone on this board said it was not so any ideas how it got this way? I can't think of any other way it would have received this kind of wear! The obverse is worn equally to the reverse. Note that the thickness is uneven also.  
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Pillar of the Community
United States
1391 Posts |
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Pillar of the Community
 Canada
9864 Posts |
coca-cola coin
acid etching removes the same amount of metal from every surface of the coin,thus making the coin thinner,and smaller in diameter while leaving all the devices still recognizable.
"Dipping" is not considered cleaning...
-from PCGS website
Edited by DBM
08/29/2013 11:20 pm
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Moderator
 Canada
10458 Posts |
Congrats on 3000 posts DBM!!  "Discovery follows discovery, each both raising and answering questions, each ending a long search, and each providing the new instruments for a new search." -- J. Robert OppenheimerContent of this post is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. See: http://creativecommons.org/licenses...0/deed.en_USMy eBay store
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Pillar of the Community
Canada
2632 Posts |
I disagree DBM I just googled that and here's one of many websites that says coke and pepsi are great for cleaning pennies. Its probably a different acid, even commercial coin cleaning products will eat the coins if left soaking for to long. Battery acid or something stronger could do it and it would be evenly disolved like you said. ebay has an article on cleaning, scroll about 2/3 the way down. http://www.ebay.com/gds/How-to-Clea...27910/g.html |
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Pillar of the Community
Canada
9864 Posts |
Thanks SPP,I see you're next in line for the milestone,congrats in advance.
@ pennyman007 coca-cola coin is just a name,doesn't imply that it was actually used for this coin,some say cola will do this,others say not,I haven't tried so I can't confirm or deny the results
"Dipping" is not considered cleaning...
-from PCGS website
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Pillar of the Community
Canada
2632 Posts |
Thanks DBM I didnt know it was kinda slang for acid wash.
Congrats on your milestone
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Bedrock of the Community
Australia
21788 Posts |
High school lab. HCl would be good enough to yield this result.
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Valued Member
 Canada
84 Posts |
Just curious! I haven't had a lot of experience with acid and metal but the experience I have had blackened or at least darkened the metal and also leaves it pitted or is there an acid that doesn't have that effect? I've never really tried acid on copper!
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Pillar of the Community
Canada
2805 Posts |
Here's my only Dryer Coin. Notice the rim is raised far above the coin - it can actually hold a penny on both sides pretty well.  |
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Pillar of the Community
Canada
2632 Posts |
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Valued Member
Canada
84 Posts |
I had never seen one before. I mistakenly thought all that rolling & tumbling would have knocked metal off the coin causing it to diminish in size. I can see I was wrong. I'm still unsure of what to tag my cent or whether to forget about it and just toss it out.
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Pillar of the Community
Canada
2632 Posts |
Well either way its a learning experience. Videos about minting coins are on youtube I understood things better after watching a bunch of them a few months ago.
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Pillar of the Community
Canada
9864 Posts |
bobberbear,nitric acid will quickly do the trick to turn a penny into exactly what you have.
Do not try it yourself,it is very dangerous.
You can tag your coin as "acid etched".
"Dipping" is not considered cleaning...
-from PCGS website
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Pillar of the Community
Canada
618 Posts |
End of story----Acid Coin.
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Valued Member
Canada
84 Posts |
Thanks DBM. That's all I was really looking for. Something to tag it. Nitric Acid eh?
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Replies: 19 / Views: 3,148 |
Posted 08/29/2013 11:16 pm
