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 Replies: 14 / Views: 705 |
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New Member
Canada
1 Posts |
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Pillar of the Community
Canada
4499 Posts |
Acid Coin , post mint damage .
This is not an error coin .
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Pillar of the Community
Canada
1303 Posts |
 Yup
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Moderator
United States
120643 Posts |
 to the Community!
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Bedrock of the Community
United States
48491 Posts |
My first thought is acid damage also. John1 
( I'm no pro, it's just my humble opinion )
Searched 6.5 +/- Million Cents Since 1971
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Valued Member
United States
250 Posts |
Question if you put acid on that coin to make it that thin wouldn't all the devices disappear
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Pillar of the Community
Canada
1107 Posts |
Acid coin.....Please fill me in. Why would the rim be gone when it contains the most material to erode, yet the devices seem fine?
"We are poor little lambs...who have lost our way...Baa...Baa...Baa"
In memory of those members who left us too soon...
In memory of Tootallious March 31, 1964 to April 15, 2020
In memory of crazyb0 July 27 2020. RIP.
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Valued Member
United States
250 Posts |
If this is acid would we not see a lot of pitting as well
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Pillar of the Community
Canada
6221 Posts |
If this was acid and being that thin you would not see the details on the rev and obv
Plus why would the acid just eat the rim and nothing else?
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Pillar of the Community
United States
2520 Posts |
Looks like your classic '50s slug to me...
"Nummi rari mira sunt, si sumptus ferre potes." - Christophorus filius Scotiae
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Pillar of the Community
Canada
4638 Posts |
It looks like acid to me as well, but it's not like hydrochloric acid. It a mild acid that starts to eat away evenly on every metal surface. It doesn't just attack the design elements, it gets everything evenly. Back in the 50's and sixties, you could do the same thing by putting a coin in Coca-Cola for a long time, changing the coke every few days if I remember right.
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Pillar of the Community
United States
2619 Posts |
You can shrink a coin by zapping it with a powerful electromagnetic field. Not sure how it affects the weight though.
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Bedrock of the Community
United States
48491 Posts |
We need coop to splane it to us  John1 ( I'm no pro, it's just my humble opinion )
Searched 6.5 +/- Million Cents Since 1971
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Pillar of the Community
Canada
632 Posts |
First, shrunk coins: they get quite deformed but the weight remains the same. They get thicker though - the electromagnetic pulse kind of rearrange the material.
Second, you don't even need to run after an acid - any cola will do it - it is sufficiently corrosive. My record is 0.9g. Put the coin on a plastic cap and submerge it in cola. Note that the rim is attacked from 3 sides while the surfaces only one so it dissolves faster.
(edited for clarity)
Edited by t_y
11/26/2022 3:24 pm
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Moderator
Canada
10314 Posts |
Quote:
We need coop to splane it to us No, we don't. This is a well documented altered coin type. All the information on this sort of post-mint modification is here: https://www.error-ref.com/acid-shrunk-coins/I see these thin acid coins all the time; heck, if I really wanted to, I could have probably built a date set of them.
"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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Replies: 14 / Views: 705 |
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Posted 11/25/2022 9:56 pm
