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LMC Struck-Thru On Thin Planchet

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 Posted 06/21/2014  09:47 am Show Profile   Bookmark this topic Add sourdough to your friends list Get a Link to this Message Number of Subscribers
This one has been a puzzler to me. It is a noticeably thin copper planchet struck in collar with a normal reverse. I don't have a scale now but it is considerably less in weight than a normal copper LMC.

The obverse (wire) rim is lower in height than the field, with the area between the rim and the field lower still.

I believe it to have been struck with a blank planchet between it and the obverse die, but I am guessing.

Anyone?


LMC-Struck-Thru-On-Thin-Planchet

LMC-Struck-Thru-On-Thin-Planchet

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ErrorCoins222's Avatar
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1699 Posts
 Posted 06/21/2014  11:24 am  Show Profile   Bookmark this reply Add ErrorCoins222 to your friends list Get a Link to this Reply
Can you post pictures of the reverse? - Is there a strong wire rim on the reverse? If so I would guess an in-collar uniface strike on a thin/split planchet.

I'm just thinking that because of the rim on the obverse of this piece, that it was possibly struck as one planchet and later detached. A strong wire rim on the reverse would rule this out - I would think.

At this point, with no reverse photo, I'm leaning towards the latter of the two.
Edited by ErrorCoins222
06/21/2014 11:29 am
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52Raymo's Avatar
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 Posted 06/21/2014  11:37 am  Show Profile   Check 52Raymo's eBay Listings Bookmark this reply Add 52Raymo to your friends list Get a Link to this Reply
Yes, both sides and an edge pic would be nice also.
Oregon coin geek.....*** GO BEAVS ! ! ! ***
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 Posted 06/21/2014  12:08 pm  Show Profile   Bookmark this reply Add mikediamond to your friends list Get a Link to this Reply
It's a rolled-thin or split planchet that was struck in-collar beneath a presumably normal planchet. In other words, an in-collar uniface strike delivered to a thin planchet.
Error coin writer and researcher.
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United States
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 Posted 06/21/2014  1:10 pm  Show Profile   Bookmark this reply Add sourdough to your friends list Get a Link to this Reply
Photo of the reverse: upon closer examination it has a thin "wire" rim.


LMC-Struck-Thru-On-Thin-Planchet


Photo edge-on (bottom coin) compared to a normal 1974 LMC (top coin). It weighs 23.5 grains compared to a normal LMC at 47.995 grains (3.11 grams). Obverses up in photo.


LMC-Struck-Thru-On-Thin-Planchet

Sounds like Mike is spot-on.
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 Posted 06/21/2014  1:13 pm  Show Profile   Bookmark this reply Add sourdough to your friends list Get a Link to this Reply
EC222 is correct with first impression, also. (Sorry, I haven't figured out where the "edit" button is.)
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ErrorCoins222's Avatar
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 Posted 06/21/2014  9:52 pm  Show Profile   Bookmark this reply Add ErrorCoins222 to your friends list Get a Link to this Reply

Quote:
It's a rolled-thin or split planchet that was struck in-collar beneath a presumably normal planchet.


So the "valley" on the inside of the wire rim is a result of being struck against the proto-rim of another planchet? I assume the strike helps form this as well.

How can you tell that this piece was struck against another coin as opposed to being struck as one piece and detaching after-strike?
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 Posted 06/22/2014  08:09 am  Show Profile   Bookmark this reply Add mikediamond to your friends list Get a Link to this Reply
I would presume the shallow gutter around the perimeter of the obverse face was generated by the top planchet's proto-rim. This cannot be a split-after-strike error because there is no trace of striations on the blank face. Additionally, the finning you can see on the reverse rim is indicative of the increased striking pressure produced by two stacked planchets.
Error coin writer and researcher.
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 Posted 06/22/2014  08:35 am  Show Profile   Bookmark this reply Add sourdough to your friends list Get a Link to this Reply
I would love to see the "upper" error coin of the two. Would it have a partial collar "railroad rim"?
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 Posted 06/22/2014  09:42 am  Show Profile   Bookmark this reply Add mikediamond to your friends list Get a Link to this Reply
There's no way to determine if the top coin was struck fully within the collar. Most examples I've seen were.
Error coin writer and researcher.
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