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Doubling Challenge - 1967 1-cent

 
 
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8677 Posts
 Posted 01/26/2019  11:52 pm Show Profile   Check SPP-Ottawa's eBay Listings Bookmark this topic Add SPP-Ottawa to your friends list Get a Link to this Message
Poll Question
So, here is a fun little exercise, we know that there is already one doubled die obverse for the 1967 cent:
http://goccf.com/t/302977#2590792

So, I offer up this example.









Poll Choices
  Extreme die deterioration doubling only
  Die deterioration doubling plus Machine Doubling
  Machine Doubling only
  Doubled die
  Doubled die plus Machine Doubling
  Doubled die plus die deterioration doubling
  Doubled die, Machine Doubling and die deterioration doubling altogether

"Research is what I am doing, when I don't know what I am doing" --Wernher von Braun

Content of this post is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. See: http://creativecommons.org/licenses...0/deed.en_US

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United States
727 Posts
 Posted 02/04/2019  10:53 am  Show Profile   Bookmark this reply Add Phil310 to your friends list Get a Link to this Reply
Lot's of votes, but no comments yet.

I think it's all three types of doubling, but I notice I'm in the minority here.

I will be interested to hear the error expert's opinions and explanations on this coin.
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 Posted 02/04/2019  1:20 pm  Show Profile   Bookmark this reply Add Bump111 to your friends list Get a Link to this Reply
Here is another less-than-expert opinion. I agree with Phil310 that all three types are present. DDD showing up on the "beads", looks like true doubling on the "B" and several other instances of MD. I'm anxious to see what the experts say as well. Interesting specimen!

Edit: I suppose most of this could be explained by a combination of MD and a slight rotation of the coin during the "bounce"?
Edited by Bump111
02/04/2019 1:22 pm
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Canada
953 Posts
 Posted 02/04/2019  5:01 pm  Show Profile   Bookmark this reply Add Canacoins to your friends list Get a Link to this Reply
As above I also think its the " trifecta " .
Nice coin.
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Canada
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 Posted 02/04/2019  9:04 pm  Show Profile   Bookmark this reply Add pginrh to your friends list Get a Link to this Reply
I'm also in for the full three.
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 Posted 02/05/2019  11:41 pm  Show Profile   Bookmark this reply Add koinpro to your friends list Get a Link to this Reply
I see Die Deterioration Doubling of the sort seen on coins struck with chromium plated dies that are heavily worn. I In the areas where the chromium plating has been removed through die wear and die abrasion the degree of die deterioration becomes greatly accelerated beyond that in other areas of the die that are still protected by the chromium. This is a very typical result on a Canadian coin struck with dies for an extended period of time. Exceedingly common for 1967 (and 1979 too). I see no other forms of doubling on this coin.
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Canada
494 Posts
 Posted 02/06/2019  12:04 am  Show Profile   Bookmark this reply Add chadcoins to your friends list Get a Link to this Reply







SPP I just found this one roll searching the other day. The A shows the die at the end of its life. Good to compare these 2 coins in different stages. I had to share this. Nice to here from you again Koinpro!!
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 Posted 02/06/2019  08:07 am  Show Profile   Bookmark this reply Add mikediamond to your friends list Get a Link to this Reply
I see a doubled die, die deterioration doubling, and Machine Doubling.
Error coin writer and researcher.
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 Posted 02/06/2019  09:14 am  Show Profile   Bookmark this reply Add Phil310 to your friends list Get a Link to this Reply
Chadcoins, can you post pictures of the ZAB of your coin for comparison?
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 Posted 02/06/2019  09:54 am  Show Profile   Bookmark this reply Add chadcoins to your friends list Get a Link to this Reply




ELIZABETH [ZAB] looks normal.
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 Posted 02/06/2019  10:11 am  Show Profile   Bookmark this reply Add Phil310 to your friends list Get a Link to this Reply
Thanks Chadcoins for posting that photo. The ZAB on SPP's coin is the part that looks like die doubling to me. I was wondering if your coin showed that also.
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 Posted 02/06/2019  10:23 am  Show Profile   Bookmark this reply Add chadcoins to your friends list Get a Link to this Reply
SPPs coin - Die deterioration,machine doubling [die chatter]
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Canada
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 Posted 02/06/2019  4:25 pm  Show Profile   Check SPP-Ottawa's eBay Listings Bookmark this reply Add SPP-Ottawa to your friends list Get a Link to this Reply
I had asked Ken and Mike to weigh in on this one, before I responded.

Die deterioration doubling is an obvious one. The narrowing of the devices and step-like doubling is also indicative of Machine Doubling...

However the "notching" I see on the Z I think is an apparent effect of the excessive die deterioration doubling (the doubled 962) of the 1962 1-cent and 5-cent come to mind. So to me - this coin has two doubling types, but it never started its life out as a doubled die.

Frankly, I think the entire Canadian decimal series is under-studied for doubled dies, but I hope this thread prompts folks to take a closer look at the post-Vicky era of Canadian coins.
"Research is what I am doing, when I don't know what I am doing" --Wernher von Braun

Content of this post is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. See: http://creativecommons.org/licenses...0/deed.en_US

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143 Posts
 Posted 02/07/2019  12:00 pm  Show Profile   Bookmark this reply Add freeqgirl to your friends list Get a Link to this Reply
I see all three. The Machine Doubling and the die deterioration is obvious (IMHO), but there is obvious doubling as well (split serifs, ie: Z in ELIZABETH) Nice find!
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