| Author |
 Replies: 11 / Views: 11,048 |
|
|
New Member
United States
5 Posts |
I have come across a 1996 Quarter, P mint mark, that is almost entirely made of copper. It is substantially thinner and lighter that a regular quarter. It has some nickle on both sides, but also has copper exposed on both sides. I have not measured the thickness yet, but it weighs 3.6 grams, and a regular one weighed 5.7 on my scales. Is this something special? I Googled it and got directed me here. Can anybody enlighten me? Thanks everybody. Mike Still trying to upload photos   Edited by spikymikie
10/24/2011 11:41 am
|
|
|
|
Pillar of the Community
United States
4132 Posts |
It sounds promising because it's under-weight, but we'll need to see a picture.
|
|
New Member
 United States
5 Posts |
Got a few pictures uploaded....My camera is not real good. It is 1.11 mm thick. I measured a "normal" one and it was 1.75mm thick.
Edited by spikymikie
10/24/2011 1:46 pm
|
|
Valued Member
Canada
389 Posts |
Very neat would like to see what everyone else will have to say
|
|
Pillar of the Community
United States
2737 Posts |
It looks like it spent quite a bit of time in an acid bath.
Error coin writer and researcher.
|
|
Valued Member
United States
187 Posts |
Edited by matthewpj73
10/24/2011 11:48 am
|
|
New Member
United States
5 Posts |
Thanks Mikediamond.....It does look that way. But the copper would dissolve before the nickle I think. Have to check the periodic table on that one..:). I will try to post some better photos, and going to get my micrometer to measure the width. I'll post when I get it.
|
|
Pillar of the Community
United States
4132 Posts |
I have seen halves, quarters and dimes where the copper was corroded out of the middle, leaving a groove along the edge, but what would do the opposite? What preferentially dissolves cupronickel over copper?
|
|
Pillar of the Community
United States
2651 Posts |
I agree with MikeDiamond answer...acid bath.
Edited by Jayman931
10/24/2011 2:34 pm
|
|
New Member
United States
5 Posts |
Captianfwiffo,
I'm with you. There is no acid that selectivly dissolves nickle and not copper. I think that it was struck with a blank that was missing allmost all of the nickle. There are no marks that would indicate it was removed. Thanks for the feedback. How does one get something like this verified as being the real thing?
|
|
Pillar of the Community
United States
2651 Posts |
The coin is a authentic quarter however it has sever PMD. Do you think the Quarter will dissolve in acid from the inside out? No, the acid will dissolve what it is in contact with. Copper is in the middle of the clad. The reason it weights 3.6 grams and not 5.7 is because of the top layer being eaten by acid. The reason it is thinner is the acid dissolved the outer layers. Which is also why it looks soft and lacks detail. If you want to get it authenticated I would check out PCGS or NGC... Here is a youtube video from PCGS on what to expect http://www.youtube.com/watch?v=hAQv6qmGcisIf I had to bet money I would always bet on Mikes judgement. He has seen a coin or two. The only other thing that would do that to a coin would be electrolysis. Good Luck Edited by Jayman931
10/24/2011 5:36 pm
|
|
New Member
United States
5 Posts |
I have really got to get a better camera. The details are there . I just have a crappy camera. I've seen coins that have been partially disolved in acid before. They were severly etched, and the sharpness was gone, just as you said. This is not the case here. I very much appreciate everyones feedback. And one more question. What is the best color and/or background to use when photographing coins? Again, thanks everybody.
|
| |
Replies: 11 / Views: 11,048 |
|
Posted 10/24/2011 11:36 am
