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 Replies: 27 / Views: 2,824 |
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Pillar of the Community
United States
6108 Posts |
This big clips amaze me that they got through the process and still managed to land correctly in the striking chamber. This one is a 2/3 cent as it weighs in at just 2.00g. 1972-D Lincoln Memorial cent mint error - straight clip   |
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Pillar of the Community
 United States
4618 Posts |
Wow! That is one big clip, and amazingly straight! I love large clips too. With the strong strike seen here I would assume that it made it successfully through the Upset Mill, but HOW? I need to do more research on the Blakesly Effect. Why is it common that it's NOT found on larger clips? And how does a blank make it through the upset mill if it's missing 1/3 of its mass. It seems as if it wouldn't be stable enough to clear through with an upset rim.  ANA ID: 3203813 - CONECA ID: N-5637 Clean a coin that may be worth collecting? Please DON'T! When in doubt, leave it dirty!! 
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Valued Member
United States
94 Posts |
Can you get photos of the broken edge. The straightness of the break and the shape columns on the reverse at the cut look like this might have been cut by someone.
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Pillar of the Community
United States
5770 Posts |
Quote:
... The straightness of the break and the shape columns on the reverse at the cut look like this might have been cut by someone. I wondered about raised metal on the reverse along the "clip" and wondered how this made it through the upset milling process and still received a fairly strong strike to the devices and rim. I wonder if there may have been a "linear fissure" where this coin came apart after the strike? The edge of the rim near the M (AMERICA) curves into the clip/break which I've only seen with a lack of metal to fill the die. The lite amount of raised metal along the clip isn't necessarily intentional and could easily be circulation damage since it wouldn't have been there immediately after the strike.  Words of encouragement are one of the major food groups.
We need to consume them regularly to thrive and grow.
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Bedrock of the Community
United States
94367 Posts |
Good points raised here. I can't contribute, but the reasoning seems appealing.
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Pillar of the Community
 United States
6108 Posts |
I'll have to pull this back out later, but seems to me the edge along the clip was ragged suggesting end of roll issue.
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Moderator
United States
95443 Posts |
I was going to bring up the same thing Pete, My first thought was how could this have passed through the upsetting mill when the proto rim would have been formed.
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Pillar of the Community
United States
6108 Posts |
It is as I remember it, a pretty straightforward-looking ragged edge across the clip. The usual little globules of metal which I assume to mean end or edge of roll, but not really sure about that.  |
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Bedrock of the Community
United States
62064 Posts |
If was cut on the edge of the metal, thus why it was not touched by the setup process.  |
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Pillar of the Community
United States
5770 Posts |
I came across a post on Joe Cronin's "Mint Errors Explained" with info that might pertain to this thread. Mike D. even commented on the coin. The thread, with impressive modern images, is about a collector, Steve Berol, relating a personal story from the 1950's when he had a 50c Walker break in half as he plunked it on a counter as a 10-year-old. This is Mikes comment: "This would be a "broken coin" error. The absence of metal flow in the design elements bordering the break indicates the coin was more-or-less intact after it left the press. Presumably there was a pre-existing planchet crack that set the coin up for failure." The image is by the owner of the coin, Steve Berol (Mod's please remove if any of this info isn't allowed.) TB, do you think this Walker error might be similar to your coin? Do you think yours might be more along the lines of a ragged type fissure where the two halfs separated after being struck, as opposed to a lamination type fissure of the Walker.     Words of encouragement are one of the major food groups.
We need to consume them regularly to thrive and grow.
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Pillar of the Community
Canada
6244 Posts |
This coin show that the blank was cut on a side of the roll. A split planchet will show the structural of the material and a man made will show the signs of the cutting or broken forces.
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Pillar of the Community
United States
756 Posts |
shouldnt a clip this large exhibit the blakesley effect opposite the clip?
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Pillar of the Community
Canada
6244 Posts |
Not all the clip coins show this effect.
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Pillar of the Community
United States
7174 Posts |
Looks like the end of the strip.
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Pillar of the Community
United States
2376 Posts |
On the vast majority of clips that I see , at one or more of the areas where the rim meets the clip I will see a spot where the rim fades and narrows while meeting the clip. A big tell tale for me. I think I'll name it the Smith effect. I'll be famous ! Here is a pic of it on this coin  |
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Pillar of the Community
Canada
6244 Posts |
STONE: I will name Smith Rim Effect. Like this if you find others, easy to add. I like the Idea.
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Replies: 27 / Views: 2,824 |
Posted 08/20/2022 04:05 am
