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 Replies: 29 / Views: 3,493 |
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Pillar of the Community
United States
2376 Posts |
I can't think of anything pre-strike or at the time of strike that could have left the edge in this condition. That only leaves something post strike
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Valued Member
 United States
90 Posts |
It was in an SMS set that I opened.
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Pillar of the Community
United States
2376 Posts |
Ok ,lets look at this .
The planchet was punched from a coin metal sheet. This process will actually leave a slight protruding ridge in the middle of the then blanks edge. This ridge is one of the things to look for with a curved clip. So far there is no groove around the coin.
Next , the upsetting mill rolls the blank to give it a protorim and the exact diameter for feeding into the striikinng chamber.when this is done the blank becomes a planchet. For the groove to happen at this point , a upstanding ridge would have to be present on the wheels of the upsetting machine. Not something that I have heard of.
The next step is the striking chamber where if this anomaly were to form there , a ridge would have to be present on the collar, though if that were the case the finished coin would never get ejected from the collar.
This is why I said that I didn't know how it could have happened until after the strike.
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Pillar of the Community
Canada
3733 Posts |
need a larger photo of the edge of the coin..
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Valued Member
United States
90 Posts |
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Valued Member
United States
90 Posts |
I need to use the correct terminology. The error is on he Edge not rim. Sorry.
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Bedrock of the Community
United States
17884 Posts |
It appears to have a DARK line in the center of the edge, ut in the last image that dark line does not appear to be either higher or lower than the outer layers.
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Pillar of the Community
United States
2376 Posts |
In the last photo on the previous page the dark line looked to be in a groove around the edge. In this last photo I can't tell if the dark line is on the crest of the reeds or in each valley between the crests. I also am not perceiving a groove around the edge.
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Pillar of the Community
 United States
4618 Posts |
It looks like toning at the center of the edge/reeding. I'm checking my sets as soon as I can to see if they have toning or discolored areas.
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
90 Posts |
I really appreciate the help.I wish I could get better pictures. The dark line is recessed. And it looks like a partial collar except that the reeds are all there...it looks like an oreo with the dark part being the filling.
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Valued Member
United States
90 Posts |
Here's a comparison of two 40% clad coins. Maybe this will help. The one on the left has the odd edge.  |
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Pillar of the Community
United States
2376 Posts |
This is an excellent photo. I have say though, that it shows the dark line to be toning as I had thought it might be in one of my first posts . There are spots in this photo that show the dark line to be blotchy, as you would expect toning to be as it migrates on the metal
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Bedrock of the Community
United States
17884 Posts |
In the last picture it is clear that the center of the ridges are not depressed which they would be if it was actually a groove. It is some kind of odd toning.
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Valued Member
United States
177 Posts |
A sharp tip sharpie marker comes to mind when looking at this....
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Valued Member
United States
90 Posts |
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Replies: 29 / Views: 3,493 |
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First Page
Posted 08/16/2019 6:51 pm
