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 Replies: 11 / Views: 374 |
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New Member
Canada
21 Posts |
Looking for some help with a coin I came across today and can't find much information on the internet. I was weighing my coins and found a 1999 Canadian penny with a weight of 2.64g instead of 2.25. I'm not sure if this would be struck on the wrong planchet, any help would be appreciated.
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Pillar of the Community
 United States
6883 Posts |
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Bedrock of the Community
Canada
21921 Posts |
For the copper plated zinc cents I believe it is +-.166g tolerance.
The OP's cent could have been struck from slightly thick stock.
Edited by JimmyD
10/06/2026 1:56 pm
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Bedrock of the Community
United States
79550 Posts |
Quote:
The OP's cent could have been struck from slightly thick stock. I agree. It's a likely possibility. Errers and Varietys.
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Pillar of the Community
 Canada
9904 Posts |
2.64 is more than 17% overweight, it should be noticeably thicker, if a collectors spouse was suddenly 17% heavier they would notice.
"Dipping" is not considered cleaning...
-from PCGS website
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New Member
Canada
16 Posts |
In 1999 there was also a copper plated steel penny that weighed 2.35 grams. There should be a P under the queens bust if it is copper plated steel.
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Bedrock of the Community
Canada
21921 Posts |
The 1999P coins (1-50 cent) were test coins for the vending industry
and were available to the public in special sets and not issued for circulation.
I doubt that test coins would have any weight variation beyond normal tolerances.
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Moderator
United States
196424 Posts |
Quote:
if a collectors spouse was suddenly 17% heavier they would notice.   |
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New Member
 Canada
21 Posts |
I appreciate everyone's comments. See the below pictures, it's the coin in question(left) compared to a regular 1999(right), it is not noticeable larger in thickness or general size. It's also non-magnetic and there is no P mint mark under the bust.   |
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Pillar of the Community
Canada
2533 Posts |
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Pillar of the Community
United States
1538 Posts |
The heavier coin has an odd look and color, appears to be pitted or damaged, and is perhaps a bit thick.
Edited by halfamind
Yesterday 9:16 pm
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Pillar of the Community
Canada
845 Posts |
-someone threw a pre-1997 cent (2.8gm.) in the blank bin
-a 2.8 blank was found while cleaning under the machinery and was thrown in the blank bin
-a foreign planchet got stuck in the blank bin- check if Mint was making coins for another country
-blank sheet was not rolled down to the correct thickness
-partied like it was 1999 and packed on the weight
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Replies: 11 / Views: 374 |
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Posted 10/06/2026 1:54 pm
