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 Replies: 63 / Views: 7,886 |
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Pillar of the Community
United States
2738 Posts |
This article contains some discussion of diagnostics useful for discriminating between weak strikes and grease strikes: http://editions.amospublishing.com/...ter%20dollarIf you type keyword "weak strike" in the Search box, you'll come up with other relevant articles. Error coin writer and researcher.
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Bedrock of the Community
United States
62064 Posts |
Thanks Mike. I tried to read the information on the link, but either my eyes are off or the letters are blurring.
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Pillar of the Community
United States
3644 Posts |
Letters are a bit blurry coop-not your eyes lol
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Pillar of the Community
United States
1781 Posts |
Mike and Coop,
I'm going to have to disagree with both of you. But what do I know?
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Pillar of the Community
United States
3644 Posts |
When you guys debate these issues we learn more and more-thanks!
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Moderator
 United States
56855 Posts |
When the pros can't agree  who do I side with  . I am still confused. Can someone post side by side pics of a cent for comparison?, one a weak strike and the other a Greaser. John1  |
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Pillar of the Community
United States
2738 Posts |
Error coin writer and researcher.
Edited by mikediamond
05/22/2015 08:36 am
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Pillar of the Community
United States
7390 Posts |
Interesting thread, the op must be confused by now. There's only one way to settle this... Thunderdome!  |
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Moderator
United States
189311 Posts |
Quote:
This morning the letters in the article I linked to are clear. I don't know what could be the cause of the perceived blurriness. Try adjusting the zoom level. I did and it cleared up. |
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Pillar of the Community
United States
3644 Posts |
Yes that worked thanks jbuck
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Pillar of the Community
United States
1781 Posts |
Mike and Coop,
I sent the link to the image of the 2000 cent to a friend in the minting business, Sean Moffatt VP / Director of Mint Operations at Great American Mint. Sean has been in the minting business for 50 years and worked with me on my projects while at Sunshine Minting and Mattatt & Co. Prior to that we communicated on errors while he worked for Hoffman & Hoffman.
Here is what he said:
"Ken, From what I can see in pic, without seeing the reverse or an off angle pic of the front I am going to say this coin is a weak strike. I base this conclusion on the visible "grain" lines from the strip being rolled which are visible in the un-filled areas of the relief as well as sections of the field. If this was a struck through error the offending substance would of wiped out these lines and left a random pattern of schmootz (yes that is a technical term) on the coin. I have struck millions of CPZ tokens (think Chuck E Cheese et. al.) and I have seen this "look" many times before. If you have any CPZ cent blanks lying around you should be able to see the same subtle line patterns across the surface.
I hope this helps.
Sean Moffatt
VP / Director of Mint Operations
Great American Mint
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Sean Moffatt has installed coinage presses, maintained them, worked as a die setter and trained personnel in coining operations. He has been in the minting business for 50 years.
I've also sent the link to a die setter at the Denver Mint and Michael White, Office of Public Affairs US Mint.
White has been a lot of help in the past and the other fellow -- we'll see. I'll let you know if I get a response.
Is it possible for me to get an angle shot and one of the reverse of this coin?
Ken
Edited by koinpro
05/22/2015 1:59 pm
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Pillar of the Community
United States
2738 Posts |
The presence of streaks is a useless diagnostic when it comes to copper-plated zinc cents. Both weak strikes and grease strikes will show these streaks. Weak strikes because the strike doesn't erase them and grease strikes because the smooth,slightly viscous die fill preserves their presence. Ninety-nine percent of grease-struck zinkers will show these streaks. Here's one one ebay: http://www.ebay.com/itm/221768511558Are you going to insist this is a weak strike? Or how about the 1995 cent in this Coin World article? http://editions.amospublishing.com/...d%20doublingError coin writer and researcher.
Edited by mikediamond
05/22/2015 2:28 pm
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Pillar of the Community
United States
2738 Posts |
Here's another grease strike with heavy planchet streaks:  Error coin writer and researcher.
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Moderator
United States
189311 Posts |
Quote:
Yes that worked thanks jbuck You are welcome. While my interest in varieties and errors is minimal, this is certainly a very interesting discussion. |
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Pillar of the Community
United States
2738 Posts |
Here's a 1995 cent that was Struck Through Grease and that retains the original streakiness of the unstruck planchet.  Error coin writer and researcher.
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Replies: 63 / Views: 7,886 |
First Page
Posted 05/22/2015 12:22 am
