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 Replies: 40 / Views: 5,767 |
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Pillar of the Community
Canada
1049 Posts |
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Forum Kid
Canada
1074 Posts |
thats very nice! excellent find I have many struck throughs, and have a lot of other errors however I have sold many of those! mine is a triple clipped 1985 canadian 1 cent!  I will thank M_d_in_guy for this very nice coin, thanks!   Edited by Vancouver IslandCoinKid
12/16/2014 10:06 am
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Pillar of the Community
 Canada
1049 Posts |
lol, ty VICK, it's one of my fav's. Excellent find, good for you, how be you post pics of this nice coin you say you have lol.
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Pillar of the Community
Canada
870 Posts |
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Pillar of the Community
Canada
1049 Posts |
very cool how the crack continues right through to the opposite side rim, ty for sharing.
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Pillar of the Community
Canada
1049 Posts |
and congrats on the today find..., there's way more in the future to get yet so keep lookin evry1.
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Moderator
 Canada
10458 Posts |
You guys crack me up...   "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
Canada
1049 Posts |
SPP, I do believe Sir, that an ordinance of Zantac is overdue lol, very nice, I'm really a newbie, educate me on this one if you may, it looks PMD, I know it's not. Would that be the edge of a sheet cut to a planchet with the flaw in the sheet prior to the stamping of the cent? |
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Moderator
Canada
10458 Posts |
Both cracked planchets you see here, are the result of flaws in the rolling strip. Possibly an air bubble in the bronze ingot when poured and cooled, then propagated by the rolling strips. I suspect the crack occurs either due to the stretching of the rolling mill, or after the blanks are cut, and a result of the pressure of the rimming mill (creating Type II planchets). Other clues on the coin, particularly where the obverse rim edge meets the large defect, you see a dovetailing of the rim.
"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
Canada
1049 Posts |
so the flaw is in the sheet(you call rolling strip)and it is on the edge, be it top, bottom, last or first. I understand the principle of rolled coils, be it, aluminum, copper, tin etc, I would think the impurity would be at the edges versus inwards, as impurities generally float or surround.
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Pillar of the Community
Canada
1049 Posts |
The stretching of the rolling mills makes sense, there is an impurity that is present, that doesn't represent the same strength as the basic raw material extruded in the coil, hence a fracture!
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Pillar of the Community
Canada
1472 Posts |
Split decision.  Edited by Zonad
12/16/2014 12:55 pm
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Pillar of the Community
Canada
1984 Posts |
This may be off topic. I am not sure if this was a planchet error that caused managing or it was mangling that caused the planchet to get messed up. Or both?   |
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Moderator
Canada
10458 Posts |
Randy, that clamshell lamination is awesome... I never get tired of looking at it!!
"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
Canada
693 Posts |
Quote:
I am not sure if this was a planchet error... It's hard to say for sure from the pictures Smallcentguy, but it may be an authentic clip that got stuck & mangled in a coin counting machine. Nice date  |
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Pillar of the Community
Canada
693 Posts |
Another clamshell !   It doesn't look like much on the obverse/reverse, but the edge is where it's at! |
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Replies: 40 / Views: 5,767 |
Posted 12/16/2014 12:06 am
