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 Replies: 10 / Views: 3,267 |
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Pillar of the Community
Canada
1186 Posts |
Finding and discovering modern Canadian doubled die varieties since 2018. 2023 Recent Publications: Modern Canadian Doubled Die Varieties - First Edition PDF & Paperback https://www.mcddv.ca (website currently down for maintenance as of 08/01/2024) |
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Pillar of the Community
 Canada
5589 Posts |
I don't understand what you mean by an extra set of denticles.
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Pillar of the Community
 Canada
1186 Posts |
If you look at the last 4 images of the rim, the Denticles on the rim Itself are not suppose to be there, the area should be a flat rim, but instead there is literally an extra set of Denticles..
Finding and discovering modern Canadian doubled die varieties since 2018. 2023 Recent Publications: Modern Canadian Doubled Die Varieties - First Edition PDF & Paperback https://www.mcddv.ca (website currently down for maintenance as of 08/01/2024) |
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Valued Member
Canada
234 Posts |
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Pillar of the Community
Canada
2301 Posts |
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Valued Member
Canada
234 Posts |
I don't think it's the signature of a collar clash, because the edge of this coin is smooth.
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Moderator
 Canada
10458 Posts |
Quote:
collar die clash Nope... 1-cent collar is smooth. The most viable explanation I have heard is that this is a type of ejection doubling phenomena. From my own experience, you tend to see this on the "thin" side of the reverse with slightly mis-aligned hammer (reverse) dies (but still within tolerances of the RCM). SP67 already commented on this, but you can find this on a whole handful of different years - it was never really anything I bothered to pay much attention to. "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
1223 Posts |
Can't explain it either, I did notice that some of these look much more like beads then denticles or am I seeing things? Close-up of the area I'm referring to from the pictures above. Cheers, Bill  |
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Valued Member
Canada
234 Posts |
Based on the information I read in the links I gave in my previous message, the pressure was not sufficient during the strike to overfill the rim with metal . The metal flow follows the denticles geometry to give this signature. The denticles will be filled with metal before the rim, and the low pressure means there's not enough metal to produce a complete rim. I'm sure this is much more complex, but this is my best guess for now. What do you think   Edited by SP67
04/25/2020 09:19 am
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Pillar of the Community
Canada
1186 Posts |
Thank you for the replies guys, much appreciated. I have came across this a few times on other years like SPP-Ottawa pointed out and I knew it was probably a minor error but I could never wrap my head around the reason why it happens. Thank you for the links as well SP67, they shed some light on whats going on here.
This was one of those things that I keep seeing during my searches and finally got around to looking it to the "how and why" aspect.
Hounddog Bill, at first I thought the same thing as well, looked more like beads and not denticles but then I realized that there was not enough room on the rim to actually complete the denticles themselves which in return makes them look more like beads.
Finding and discovering modern Canadian doubled die varieties since 2018. 2023 Recent Publications: Modern Canadian Doubled Die Varieties - First Edition PDF & Paperback https://www.mcddv.ca (website currently down for maintenance as of 08/01/2024) |
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Pillar of the Community
Canada
9865 Posts |
Not a collar clash.
Not a result of insufficient pressure.
I concur with SPP-Ottawa and believe it's a type of ejection doubling affecting only the highest point of relief, the rim.
"Dipping" is not considered cleaning...
-from PCGS website
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Replies: 10 / Views: 3,267 |
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Posted 04/23/2020 9:50 pm
