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 Replies: 36 / Views: 9,866 |
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New Member
Canada
9 Posts |
Hello out there! I'm new to this site and am hoping to find a collector who can explain my unusual 1984 uncirculated penny. The coin is identical in every respect to a regular 1984 cent except that it is made of an alloy which is similar in colour to the brass in a loonie or a toonie. The coin has not been dipped or plated and is apparently solid material throughout according to a metals expert who examined the coin. Has anyone any information or explanation on this coin? Could it be a trial piece or a mint error? I don't believe it's a hoax.
Many thanks for your interest.
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Valued Member
Canada
118 Posts |
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Pillar of the Community
Canada
1411 Posts |
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Moderator
 United States
56855 Posts |
 to CCF. We need a photo and a weight and how many MM wide it is. John1  |
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New Member
 Canada
9 Posts |
I'm working on getting photos of this coin but meanwhile the weight is 2.5 grams and 19mm diameter.
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Moderator
United States
56855 Posts |
Those numbers are right for a normal 1984. Will be waiting on pics. John1 |
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Valued Member
Canada
235 Posts |
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New Member
Canada
9 Posts |
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Pillar of the Community
Canada
1984 Posts |
This coin reminds me of a 1996 cent I posted on CCRS a couple of years back. Mine is also very brassy but has a touch of iridescence. The edges of the coin cannot be scratched with steel. The CCRS consensus was that the coin or its surface was likely altered to brass through heat treatment. It is still on my list to, hopefully, ask SPP to do XRF on at some point....   Edited by Smallcentguy
07/16/2012 4:55 pm
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Pillar of the Community
Canada
1411 Posts |
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Pillar of the Community
Canada
2781 Posts |
Quote:
The CCRS consensus was that the coin or its surface was likely altered to brass through heat treatment if it was a plated planchet then it would be easy. you can cook it up in a frying pan and get the copper plating to absorb the zinc literally turning the plating to brass. but with 1996 (or OPs 1984) you just dont have enough zinc content to get a substantial color change like that. odds are it's enviromental/chemical/home plated, or (less likely) a foreign planchet? then again looking at the details on the OPs coin, it looks almost prooflike. do proofs use a different alloy? |
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Moderator
Canada
10463 Posts |
Time for science to step up and answer this riddle. You know how to contact me, I will happily do an XRF analysis of the coin and even a comparative SEM analysis of the surface.
"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
1984 Posts |
Its in the bundle with a the other stuff...!
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New Member
Canada
9 Posts |
What do SPP, XRF and SEM mean?
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Moderator
Canada
10463 Posts |
SPP is short for "Sherwood Park Pennies" (my ebay name). As for the other acronyms, if you are here on an online forum, then you already have Google at your fingertips to find the answers yourself. "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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New Member
Canada
9 Posts |
Sure, I would be happy to send you the coin for XRF and SEM analysis. Please send details. Many thanks.
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Replies: 36 / Views: 9,866 |
Posted 07/14/2012 6:50 pm
