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 Replies: 13 / Views: 2,917 |
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Pillar of the Community
Canada
5255 Posts |
I have a 1978 cent that weighs 3.05 grams, whereas the "book" weight should be 3.24 grams. It is not wear, and you can easily see the weakly struck letters. My question is whether this is within the normal Weight Tolerance, or if not, is it very unusual or simply a bit unusual? |
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Pillar of the Community
United States
1609 Posts |
Well, they're meant to weigh in at something like 3.1 grams, and if I remember correctly, the tolerance is 0.04. So, maybe very slightly under tolerances, but I doubt it adds any value.
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Pillar of the Community
 United States
2843 Posts |
Oriole is from Canada and the cents there are supposed to weigh 3.24 grams.
Are you asking about a US cent or a Canadian one?
Edited by BigSilver
01/23/2018 11:16 am
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Pillar of the Community
 Canada
5255 Posts |
This was the Canadian forum, so I supposed that I didn't need to mention that it is a canadian 1 cent.
Yes it is Canadian. I have asked the moderators to change the Title.
Edited by oriole
01/23/2018 11:25 am
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Pillar of the Community
Canada
891 Posts |
does seem a bit light, maybe post a picture thin planchet ?
Edited by oldmike
01/23/2018 1:11 pm
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Bedrock of the Community
United States
94367 Posts |
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Pillar of the Community
Canada
1624 Posts |
Or struck on a foreign planchet
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Pillar of the Community
Canada
5255 Posts |
OK, I will post a picture soon. That may shed some light.
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Pillar of the Community
Canada
5255 Posts |
As promised, here are pictures. The light one is on the left, and I am comparing it to a 1975 1 cent, which weighs 3.26 grams. It is the same thickness and diameter to the accuracy of my calipers, but visually you can see that the light one is a bit thin. That is what I noticed in the first place. You can see the weakness in some of the letters in the word "canada".   Maybe the images will help. |
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Moderator
 Canada
10463 Posts |
Yes, within tolerances.
"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
United States
2843 Posts |
Barbados one cent coins were struck by the Canadian mint in 1978. They would weigh like a US cent at 3.11. This would be possible, but difficult to prove. I cannot find the correct composition for Barbados cents, but the Canadian cent should be 98% copper, 1.75% tin and .25% zinc.
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Pillar of the Community
Canada
5255 Posts |
Thanks, SPP. It will still go into my cabinet of curiosities, even so.
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Pillar of the Community
Canada
5255 Posts |
SPP, how might one prove, or not, if this were struck on a Barbados planchet?
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Moderator
Canada
10463 Posts |
Are they both the same composition? If so, it would be near impossible... unless you found one at the lower margin of the Barbados tolerances (2.95 -ish)
"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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Replies: 13 / Views: 2,917 |
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Posted 01/23/2018 08:36 am
