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 Replies: 17 / Views: 3,602 |
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Pillar of the Community
7234 Posts |
Quote:
Looks legit; you can see the Blakesley effect opposite both clips.
 Nice find!! |
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Pillar of the Community
Canada
693 Posts |
Legit. Nice double clip with lots of the original color remaining.
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Bedrock of the Community
United States
12477 Posts |
Nice one!  In Memory of Crazyb0 12-26-1951 to 7-27-2020
In Memory of Tootallious 3-31-1964 to 4-15-2020
In Memory of T-BOP 10-12-1949 to 1-19-2024
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Pillar of the Community
 Canada
2360 Posts |
That 1975 double clip is a beauty. Edited by SilverDon
11/17/2017 03:08 am
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Pillar of the Community
 Canada
955 Posts |
Thank you all |
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Pillar of the Community
Canada
3234 Posts |
Quote:
That 1975 double clip
is a beauty. Now when I look at it, I also see 2 other rim areas that are slightly depressed as if they were almost clipped along with the 2 major clips. Can anyone also explain what took place with the other 2 depressed rim marks ? |
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Pillar of the Community
Canada
693 Posts |
The two other depressed areas are due to the Blakesley Effect.
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Pillar of the Community
Canada
955 Posts |
I also wondered about them. Thx again . Quote:
Nice one in not bad condition for a 42 year old coin. That is a part of our hobby I seem to forget about frequently . Thx for reminding me Edited by Canacoins
11/18/2017 3:50 pm
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Pillar of the Community
Canada
3234 Posts |
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The two other depressed areas are due to the Blakesley Effect. Thanks for that ..!! |
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Pillar of the Community
Canada
2360 Posts |
For those who have not seen the Blakesley Effect it is a weakness on the opposite side of the clipped coin. This one the obverse shows the Blakesley clearly. I have circled the Effect in this photo.  |
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Moderator
 United States
23522 Posts |
Quote:
For those who have not seen the Blakesley Effect it is a weakness on
the opposite side of the clipped coin. This one the obverse shows
the Blakesley clearly. I have circled the Effect in this photo.
This happens during the rim upset process, since the clipped area does not offer the equal pressure on both sides of the planchet required for a proper rim upset. Therefore, there is insufficient metal in that area during the strike to properly create the necessary detail. |
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Pillar of the Community
Canada
3234 Posts |
Thanks SsuperDdave,...for the first time your explanation has me truly understanding what and why we see that slight depression ( Blakesley Effect ) opposite the clip or clips in this case..
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Pillar of the Community
Canada
955 Posts |
I also give thanks SsuperDdave . :)
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Moderator
Canada
10464 Posts |
Basically - Newton's third law in effect...
"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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Moderator
United States
23522 Posts |
Quote:
Basically - Newton's third law in effect...
Physics is phun, isn't it?  |
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Replies: 17 / Views: 3,602 |
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First Page
Posted 11/15/2017 11:14 pm
