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Pillar of the Community
United States
6478 Posts |
It looks like a MAD so that would be the metal pushed up next to the rim from the strike. I think I'm correct.
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Rest in Peace
United States
1943 Posts |
The area where you see the abrupt change is where the design rim is worn or broken called a rim Cud. When you see 2 parts of the rim like this the inner ring is the design rim which is on the die. The outer part of the rim is extra metal that pushes up between the die and the collar which is slight finning. |
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Pillar of the Community
 United States
3332 Posts |
Notice that the rim above the arrow which, if viewed on the coin in the next to the last image, is opposite the nose (between 2:30k and 3k) and appears as a more or less normal rim going around the coin counterclockwise to his shoulder where it begins to split into the 2 parts.
Also, as an aside, there is a slight CW Die Rotation of 12 degrees.
Edited by Pete2226
01/23/2016 1:19 pm
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Rest in Peace
United States
1943 Posts |
To me the normal rim is the area with 2 parts. The rim above Lincoln is almost non existent. This is where the obverse die was shifted and was rubbing against the collar. This interference wore the design rim and also chipped it in front of the nose giving the rim Cud. |
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Pillar of the Community
United States
3332 Posts |
Quote: This interference wore the design rim and also chipped it in front of the nose giving the rim Cud. So the rim Cud continues and gradually disappears in the area of the motto? |
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Rest in Peace
United States
1943 Posts |
It looks like the rim Cud starts at the nose and ends a little higher about the level of the eye. I think your close ups go around the coin to the one side of the rim Cud but you don't have a close up a little higher to show the other side. |
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Pillar of the Community
United States
3332 Posts |
Quote:
but you don't have a close up a little higher to show the other side. I'll work on that - give me a few minutes! |
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Pillar of the Community
United States
3332 Posts |
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Rest in Peace
United States
1943 Posts |
The rim Cud looks like it has a sharp abrupt end on the one side but feathers out before it gets to the last T in TRUST. In your close up you can see the height of the rim change as it comes up to the top of the obverse. I think the interference with the collar has also slightly tilted the obverse die causing it to strike deeper at the 6:00 position compared to the 12:00 position. |
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Pillar of the Community
United States
3332 Posts |
Quote:The rim Cud looks like it has a sharp abrupt end on the one side but feathers out before it gets to the last T in TRUST Thank you Bob - I have never seen a rim Cud so large or one which tapers...I guess that I am not convinced that is what it is yet, but I am such a novice at this - as you know! I appreciate your looking at this. |
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Bedrock of the Community
United States
62064 Posts |
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Rest in Peace
United States
1943 Posts |
I would think a flattened fin wouldn't have a sharp end to it. The folded part would give a sharp edge on one side over the design rim but the back side would taper down to the unfolded part of the fin. Also the fin leading up to this spot doesn't look high enough to me to form this lump.
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Pillar of the Community
United States
526 Posts |
In my minds eye I can not see this as a rim Cud. The rim in that area appears normal. However, since this is a MAD strike we are seeing the normal rim formed by the gutter of the die and the proto-rim formed by the upset mill with a valley in between the two. The reason that the proto-rim appears to be more defined is an action of the collar when the edge met with the that device. BJ Neff |
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Pillar of the Community
United States
3332 Posts |
Thanks for the explanation, BJ. Very helpful. Can you say how it is that the valley/proto rim/normal rim stops so abruptly and becomes a normal looking rim?
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Pillar of the Community
United States
3332 Posts |
I just remembered that I had posted a similar question here: https://goccf.com/t/243971#243971and there was not an explanation for the abrupt end of the trench or valley on the rim in that discussion either. I now have at least 2 examples of this abrupt ending of the trench or valley, so the feature is repeatable in the minting process somewhere. If anyone finds an explanation, I would like to hear it!  Edited by Pete2226
01/27/2016 09:57 am
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Posted 01/23/2016 1:02 pm
