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 Replies: 14 / Views: 1,501 |
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Pillar of the Community
Canada
3328 Posts |
Was looking at the reeding on this dine and noticed a line going through the reeding all the way around the coin. I don't look at the edge of coins often and can't find anything on this. I wanna assume it's from some kind of holder or something squeezing the rim all the way around.  |
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Bedrock of the Community
Canada
21648 Posts |
Whatever caused it, it is damage and not an error.
Reeding is put on when the planchet goes through the upsetting mill
and I can't can't see how that line could occur at that time.
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Pillar of the Community
 Canada
3328 Posts |
All the errors I have seen that have an indent through the reeding is caused by other errors and is usually much more dramatic then this, so I think I'll have to agree. Just looked so precise prefect line going all the way around through the middle of the reeding so I had to ask. Thanks again @JimmyD for taking time to answer :).
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Bedrock of the Community
United States
94367 Posts |
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Pillar of the Community
Canada
1224 Posts |
Quote: "Reeding is put on when the planchet goes through the upsetting mill.
JimmyD, are you sure about this statement?
Cheers, Bill
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Pillar of the Community
Canada
5324 Posts |
The collar creates the reeding, agree this id PMDEdited by john100
08/01/2021 10:11 am
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Bedrock of the Community
Canada
21648 Posts |
Of course reeding occurs from the collar. Must have been asleep this morning.  At least Coinfrog agreed with me. |
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Pillar of the Community
United States
2869 Posts |
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Moderator
 Canada
10463 Posts |
Quote:
Reeding is put on when the planchet goes through the upsetting mill For the benefit of Wreckkdd, the upset mill turns blanks (Type 1) into planchets (Type 2). The collar die puts on the reeding, it also puts the 11-sided shape on the loon dollar and the intermittent reeding on the two dollar coin. The collar die is essential to form a proper rim on the coin as well, as it constrains the flow of metal. Any excess metal can force its way out of the collar, resulting in a Rim Fin. Lastly, previous interpretations are correct; that is a damaged coin. "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
3328 Posts |
@Spp-Ottowa thanks for the info:), how do you differentiate a Rim Fin from a slightly misaligned die? Or is it the same thing? |
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Moderator
Canada
10463 Posts |
A mis-aligned die is a process, which can affect many coins all the same. A Rim Fin is a result, which can happen through any number (or combination) of processes. For example, here is a Rim Fin that was caused from too much pressure on a proof strike:  Here is a Rim Fin from two planchets being struck together (lots of excess metal):  And, of course, a Rim Fin with a misaligned die.  "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
668 Posts |
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Pillar of the Community
Canada
3328 Posts |
@SppOttowa, so the silver dime I posted is a misaligned die but not enough to be called a Rim Fin? |
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Moderator
Canada
10463 Posts |
Don't forget that coins are mint as a mechanical production stream. I would argue that the dies are never -perfectly- aligned, and there is a degree of tolerance that the mint deems acceptable. Your silver coin, with a slightly misaligned hammer (reverse) die, falls within that range of tolerance. So yes, the rim is weakly finned in your 1965 10c that you posted. Is it weak enough to be of any desire to an error collector? Absolutely not. However, if you like it, then collect it - just don't expect its value to ever exceed the value of the silver in that coin.
"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
3328 Posts |
Decided to tip it to a young delivery man who brought my pizza yesterday, asked if he wanted 5$ or 2 silver dimes, he chose dimes so I gave him the 1965 and a 1967 fish dime. I have off stucks for educational reasons and to compare tolerance.
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Replies: 14 / Views: 1,501 |
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Posted 08/01/2021 09:19 am
