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 Replies: 12 / Views: 2,175 |
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Pillar of the Community
United States
1217 Posts |
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Moderator
 United States
56855 Posts |
How does the "Blakesley" effect work on a straight clip? I am not seeing any on either coin. Also,is that a die clash on the dime by IGWT? John1  |
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Pillar of the Community
 United States
1217 Posts |
I don't know how it works. I have found clips that have been confirmed as clips where the blakesly effect was not overly apparent. I do not think that either is PMD. I will check coin for die clash |
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Pillar of the Community
United States
2737 Posts |
Both clips look dodgy. I see no Blakesley effect, no taper and fadeout of the design rim, and no metal flow in design elements bordering the straight edges. If the straight-clipped edge on the dime doesn't show asymmetrical exposure of the copper core, then it's a fake. If the straight-clipped edge on the cent shows exposure of the zinc core, then it's a fake.
Error coin writer and researcher.
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Pillar of the Community
United States
2757 Posts |
the first one bothers me a little. is there a slight ridge on one side of the coin where the 'clip' is?
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Pillar of the Community
United States
1217 Posts |
Thanks all. I will double check both and let you know. This is why I post my errors- so someone more knowledgeable than me can confirm or deny. The last thing I want to do is misrepresent anything I find to someone else when I could have double checked here. Thanks for input.
FYI - these two coins came from entirely different lots. That would be bad luck if they both ended up not being clips.
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Pillar of the Community
United States
2651 Posts |
They both look weird to me. I had to pull out a few of my own straight clips for comparison. I am not seeing any Blakely effect either. However it seems you have the coins not quite centered so maybe there is something going on that is being hidden by the camera angle. The reverse on the Dime looks weird because the angle is showing part of the face of the clip. I'm not saying they are not errors...but I can't see any "markers" proving they are legit.
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Pillar of the Community
United States
1217 Posts |
Double checked the dime - it's crap. Mike diamond info gave me a clue and I looked at edge. It was PMD. I did not look closely at edge. I saw straight edge and thought possible clip. Just used loupe on it now. Mike diamond advice on second one also rang true. Zinc core shows - fake/pmd Thanks all. I get about half right. Getting better. Learning is the key. I was not 100% convinced, but in hindsight its always easy to be blinded by your wishful thinking. Thanks for grounding me |
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Bedrock of the Community
United States
62064 Posts |
To understand coins you need to know the process on how, why coins are made. Here is a video: http://www.history.com/shows/modern...n-productionNote at about 02:55 on the video on how the coins rims are created. Probably the best explanation I've seen. The coin are sent through the a channel the makes the rims raise. When a blank is not complete (With a clipped or straight clipped area, the area opposite of the clip wont raise in that area. Some minor clips may not raise affect the rim as much as large clip might. Sometimes the Blakesley affect might be seen on just one side. I feel it is because the planchet raised during the process. Thus the affect is seen on just one side of the coin. Hope this helps. |
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Pillar of the Community
United States
8516 Posts |
Great video ! That was not how I pictured rims being made but now I know. Thanks Coop !
Oregon coin geek.....*** GO BEAVS ! ! ! ***
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New Member
United States
47 Posts |
That short video was very interesting. I'm surprised how far the coins drop into the bins after being punched by the die.
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Bedrock of the Community
United States
62064 Posts |
Probably the leading cause for what we call as bag marks, that leave marks on them. Imaging if they had an incline instead. We would probably have a lot more higher grade coins. Thus the tem PDS (Post strike Damage) seem more appropriate than PMD (Post Mint Damage) as the coin may suffer this right after the strike before it leave the mint. |
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Pillar of the Community
United States
1217 Posts |
Good point. I will write the mint a letter. Ha
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Replies: 12 / Views: 2,175 |
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Posted 12/14/2013 04:55 am
