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1964-P Lincoln Memorial Cent - How Is This Caused?

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Scooby Due's Avatar
United States
4000 Posts
 Posted 07/15/2010  01:53 am Show Profile   Bookmark this topic Add Scooby Due to your friends list Get a Link to this Message Number of Subscribers
I think I've heard this referred to as "shadow rippling"?

I assume it has something to do with Die Deterioration? But, how does it become incuse?

EDIT: I guess I should mention it's a '64P.

1964-P-Lincoln-Memorial-Cent---How-Is-This-Caused?
1964-P-Lincoln-Memorial-Cent---How-Is-This-Caused?
Edited by Scooby Due
07/15/2010 02:08 am
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wolf-n-wa's Avatar
United States
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 Posted 07/15/2010  01:57 am  Show Profile   Bookmark this reply Add wolf-n-wa to your friends list Get a Link to this Reply
Good question. Call it a DD and sell it on ebay. WOLF
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SHAFTA9a's Avatar
Canada
10743 Posts
 Posted 07/15/2010  06:07 am  Show Profile   Bookmark this reply Add SHAFTA9a to your friends list Get a Link to this Reply
That is an interesting coin.

I would think you are right about Die Deterioration.

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 Posted 07/15/2010  09:08 am  Show Profile   Bookmark this reply Add mikediamond to your friends list Get a Link to this Reply
This coin was altered outside the Mint. Exactly how it's done is subject to debate. Traditionally it's been linked to the use of a rotating brush.
Error coin writer and researcher.
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Scooby Due's Avatar
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 Posted 07/15/2010  11:18 am  Show Profile   Bookmark this reply Add Scooby Due to your friends list Get a Link to this Reply
Thanks Mike. I assume you've examined these up close. Now I'm intrigued by how this could be done, especially when looking at the "D" in UNITED. There is a mirror image inside the loop of it. The "shadow" runs around the entire coin with no signs of any other damage to the devices (at least that I can tell).
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steve199's Avatar
United States
1882 Posts
 Posted 07/15/2010  12:04 pm  Show Profile   Bookmark this reply Add steve199 to your friends list Get a Link to this Reply
Methinks Scooby and Mike are talking about two different effects on that coin...
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 Posted 07/15/2010  1:10 pm  Show Profile   Bookmark this reply Add mikediamond to your friends list Get a Link to this Reply
I don't know exactly how the effect is produced. Far more severe examples exist and they're totally incompatible with anything a coinage press could produce. So I feel safe in extrapolating from them to more modest examples like the coin shown here. Unlike Die Deterioration, the letters are often thinner than normal and the coin's weight is also often reduced. Notice as well that the design rim shows the same pattern of "ripples". You won't see this in a genuine case of Die Deterioration. How about a photo of the edge, while we're at it? A genuine error will show no effect on the edge, while these "rippled" coins often do.
Error coin writer and researcher.
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steve199's Avatar
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 Posted 07/15/2010  1:23 pm  Show Profile   Bookmark this reply Add steve199 to your friends list Get a Link to this Reply
Mike, are you saying the reflective doubling around the devices and letters were also post-mint?
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Scooby Due's Avatar
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 Posted 07/15/2010  2:08 pm  Show Profile   Bookmark this reply Add Scooby Due to your friends list Get a Link to this Reply
I'll weigh it and get a pic of the rim when I get home tonight after work.
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razorear's Avatar
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613 Posts
 Posted 07/15/2010  3:06 pm  Show Profile   Bookmark this reply Add razorear to your friends list Get a Link to this Reply
I think I understand what Mike is talking about. Some kind of rotating tool that has moved the metal around. Are there any microscopic scratches that your photo's aren't picking up on?
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 Posted 07/15/2010  5:32 pm  Show Profile   Bookmark this reply Add mikediamond to your friends list Get a Link to this Reply
In answer to Steve199's question, yes, all of the odd effects are post-mint.
Error coin writer and researcher.
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coop's Avatar
United States
62064 Posts
 Posted 07/15/2010  5:37 pm  Show Profile   Bookmark this reply Add coop to your friends list Get a Link to this Reply
I always thought the ripples were caused by heating the coin. But this one doesn't look blackened. Maybe an oven.
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Scooby Due's Avatar
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 Posted 07/15/2010  9:59 pm  Show Profile   Bookmark this reply Add Scooby Due to your friends list Get a Link to this Reply
OK. Weight is 3.09 g. Here are pics of the rim.

I also noticed (this time), that there is an extra "flap" of metal on most of the devices, best shown on the left side of the "U" and "N" below, which may help in the diagnosis or support the oven theory.

1964-P-Lincoln-Memorial-Cent---How-Is-This-Caused?
1964-P-Lincoln-Memorial-Cent---How-Is-This-Caused?
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BadThad's Avatar
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19935 Posts
 Posted 07/15/2010  11:22 pm  Show Profile   Bookmark this reply Add BadThad to your friends list Get a Link to this Reply
Did someone say rippled surface?


1964-P-Lincoln-Memorial-Cent---How-Is-This-Caused?
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Scooby Due's Avatar
United States
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 Posted 07/15/2010  11:26 pm  Show Profile   Bookmark this reply Add Scooby Due to your friends list Get a Link to this Reply
Wow! So, I guess that's where my coin was headed if they decided they wanted it well-done instead of medium-rare?
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 Posted 07/16/2010  09:56 am  Show Profile   Bookmark this reply Add mikediamond to your friends list Get a Link to this Reply
Scooby, you photographed the edge, not the rim. There's a difference. Anyway, the edge looks a little rougher than one would expect but not egregiously so. BadThad did post a much more severe rippled cent.
Error coin writer and researcher.
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