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Replies: 11 / Views: 1,327 |
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New Member
United States
40 Posts |
I am relatively new to this hobby so there are a lot of things that I have not been exposed to yet. Over the past year, I have become fond of mint and proof sets. I like them because I have an example of every coin to study and I tend to stay on task by learning one year at a time. A couple of nights ago, I was randomly looking through my coins and this 1987-S Lincoln Memorial cent caught my attention. I have had it for a while but I never noticed anything unusual about it. Here are my problems: 1.) I have looked everywhere for relevant information that would reference this coin but I can not find any. I came up short looking in my RedBook, Bluebook and Book of Lincoln Cents. I have not been able to find one example of a 1987-S error penny on the web. 2.) There are what appear to be doubling errors on the obverse and reverse of this penny. I have not read very much about Mint operations so I can not speculate about the cause or type of failures I see. OBVERSE: Doubling present on Date, In God We Trust and Liberty. There are visible faults on the mint mark and along the bust of Lincoln. REVERSE: Doubling present on ONE CENT, United States of America and barely visible on E. Pluribus Unum. A fault is present around the exterior of the Lincoln Memorial. Please view the photos and let me know what you think. Thank you,       Clinton *** Moved by Staff to a more appropriate forum. ***
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Moderator
 United States
56855 Posts |
I am not seeing a doubled die.I see zinc showing through the copper plating. John1 
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New Member
 United States
40 Posts |
Thank you. I will read about that.
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Pillar of the Community
Canada
5417 Posts |
Ya John's right. The doubling is not evident in the pictures. Sorry.
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New Member
 United States
40 Posts |
I figured there would be a logical explanation. Thank you for taking the time to comment.
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Bedrock of the Community
United States
62064 Posts |
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Pillar of the Community
United States
2189 Posts |
The split plating around the devices give the illusion of doubling.It's a common misinterpretation of whats going on
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New Member
 United States
40 Posts |
Thank you Coop. This penny is in a U.S. Mint Proof Set and I was wondering how it made it through their quaility control checks. I did not know it would continue to become worse.
That is great information. Thank you again.
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Bedrock of the Community
United States
62064 Posts |
If the plating is split, it is not noticed for some time. It may take years to show up. So they would have missed that at the mint.
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Bedrock of the Community
United States
17884 Posts |
If the plating splits and exposes the zinc like it has on this one between the lettering and the rim, it is noticeable immediately. Post strike inspection quality control is NOT as great as most people think it is.
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Pillar of the Community
United States
1699 Posts |
I think I heard once, that proof zinc planchets are double plated with copper to prevent copper plating splitting during the double striking of proof coinage. Can anyone confirm this?
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New Member
 United States
40 Posts |
I have noticed that this type of error is not listed on many webpages. Is that because it is uncommon or because it does not add value?
Again, I would like to thank everyone for your time and wonderful comments. I am having a ball. It is nice to finally be able to someone about coins.
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Replies: 11 / Views: 1,327 |
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