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 Replies: 15 / Views: 1,584 |
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Moderator
 Canada
10463 Posts |
I would caution those who might be interested in bidding on this item: http://www.ebay.com/itm/ERROR-1978-...170928109378This is a good learning opportunity to study this error, and why I don't think it is a legitimate clip error. There are several clues to look for here... "Discovery follows discovery, each both raising and answering questions, each ending a long search, and each providing the new instruments for a new search." -- J. Robert OppenheimerContent of this post is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. See: http://creativecommons.org/licenses...0/deed.en_USMy eBay store
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Pillar of the Community
United States
1699 Posts |
What looks odd to you? Many larger clips are irregularly shaped and there looks to be evidence of dei flow and the blakesely effect on this one. It looks genuine from what I can see, but better pictures would define it either way.
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Pillar of the Community
Canada
1984 Posts |
I don't see any Blakesley (sp?) effect
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Pillar of the Community
Canada
2781 Posts |
i havent seen a lot of these, but the shape looks WAY off.
not even remotely consistant or even circular for that matter.
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Pillar of the Community
Australia
4411 Posts |
I cant see any blakesly and with a clip that large I would expect some of the lettering close to the clip to how some fish tailing as it flowed into the void.
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Pillar of the Community
 Canada
9869 Posts |
What enworb said.
"Dipping" is not considered cleaning...
-from PCGS website
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Moderator
 Canada
10463 Posts |
Wade and enworb have both raised good points. Every clip I have, even ones that are larger than that, and even football clips (elliptical planchets) - the arc of the clipped form exactly matches the circular form of the coin's intended shape - that is, the circular form of the blanking machine. Rimming only alters this slightly, and with a clip that large, there will be a big pressure differential in the rimming machine, causing a flattened rim as a blakesley effect. The only thing we cannot see is the clip itself, on edge. Then as the coin is struck, you get elements of the devices closest to the void 'fish-tailing' off (I like that word), even the rim will have a pinched out effect at the edge of the void. I see nothing on this coin, that tells me it is legitimate - aside from the obvious shape, the point at where the rim meets the void, was the dead giveaway for me. Compare it to the excellent photos provided here: https://goccf.com/t/124855here: https://goccf.com/t/119276and here: https://goccf.com/t/80158"Discovery follows discovery, each both raising and answering questions, each ending a long search, and each providing the new instruments for a new search." -- J. Robert OppenheimerContent of this post is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. See: http://creativecommons.org/licenses...0/deed.en_USMy eBay store
Edited by SPP-Ottawa
10/26/2012 02:10 am
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Pillar of the Community
Canada
2301 Posts |
IMO the rimming machine would cause a tapering of the rim as pressure is lost. Almost coming to a point at the commencement of the clip.
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Pillar of the Community
United States
1699 Posts |
SPP-O, here is an example that shows an irregularly shaped clip. I had thought that it relatively common with larger clips that they were somewhat distorted,(possibly different for Canadian coinage?)  Also, there IS some Blakesley effect, albeit minor. I also think there is some tapering of the nine in the date. edit: I also just checked, and the seller just added some edge pics, as I had requested. It looks good to me. Edited by ErrorCoins222
10/26/2012 9:13 pm
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Moderator
Canada
10463 Posts |
Are the Canadian cutting (blanking) machines similar for US coins? I know that the presses were (and are) very different... I have not studied US errors, other than read a few books about US errors in general. "Discovery follows discovery, each both raising and answering questions, each ending a long search, and each providing the new instruments for a new search." -- J. Robert OppenheimerContent of this post is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. See: http://creativecommons.org/licenses...0/deed.en_USMy eBay store
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Pillar of the Community
United States
1812 Posts |
There are clips shaped like that where the next blank would be an elliptical clip, however, I have my doubts on this one due to the sharpness of details on the edge and the edge photo shows a line it the center that looks like it was punched from both sides and met in the middle...
I have many clips of World Coins in my collection, just not the time to see if any of them has the center mark that this coin has...
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Rest in Peace
1988 Posts |
Hi Broken-CoinI analysed this clip through a program I use and it is not quite clipped in the centre of the coin, but clipped 2/3 down from the top, so IMO (limited opinion) if someone used a device to create the clip, wouldn't it come out as 50/50 and not 66/33 so to speak...?  |
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Pillar of the Community
United States
1699 Posts |
Here is a good link: http://error-ref.com/_Curved_clips_.html Take a look at the special note about the blakesley effect. Even though I believe it is present on this coin, it still applies for its weakness. The only thing that would seem off about this coin, according to this site, which is highly credible, would be the lack of weakness around the clip. Here too, I believe that there is some light stretching of bordering details. |
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Pillar of the Community
Canada
1581 Posts |
Good link.
But those crescent clips are weird. I wouldn't have thought the remaining blank would take a rim nor a die stamp with such precision.
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Pillar of the Community
Canada
2301 Posts |
The rim seems straight cut not tapered as the link would suggest? Might be my tired eyes tho.
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Pillar of the Community
Canada
1472 Posts |
I'm going to have a close look.
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Replies: 15 / Views: 1,584 |
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Posted 10/25/2012 10:22 pm
