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1978 Penny Wrong Planchet

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New Member

Canada
23 Posts
 Posted 03/25/2023  11:53 am Show Profile   Bookmark this topic Add thynium to your friends list Get a Link to this Message
Hi all, I found this penny , 1st I was assumed was on dime planchet, but its non magnetic.
doesn't hav scale with 0.00 and its weight 3g , so 2.51 to 3.49g
Diameter ~18.5millimeter
So I'm†asked if its not on dime planchet was else could it be ? Thx in advance

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Canada
9125 Posts
 Posted 03/25/2023  12:10 pm  Show Profile   Bookmark this reply Add DBM to your friends list Get a Link to this Reply
Without an accurate weight we won't be able to help.
Try ad get your local postal outlet to weigh it.
"Dipping" is not considered cleaning...
-from PCGS website
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Canada
18272 Posts
 Posted 03/25/2023  12:11 pm  Show Profile   Bookmark this reply Add JimmyD to your friends list Get a Link to this Reply
If it was a dime planchet, it would be nickel coloured, magnetic and weigh 2.07 grams.
Also it would not be fully formed as a dime planchet is smaller.
Really need the weight to two decimal points.
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United States
868 Posts
 Posted 03/25/2023  12:16 pm  Show Profile   Bookmark this reply Add halfamind to your friends list Get a Link to this Reply
Possibly plated after minting, but without a weight it's hard to know.
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United States
78324 Posts
 Posted 03/25/2023  12:17 pm  Show Profile   Bookmark this reply Add Coinfrog to your friends list Get a Link to this Reply




to the CCF!
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Canada
5107 Posts
 Posted 03/25/2023  1:21 pm  Show Profile   Bookmark this reply Add john100 to your friends list Get a Link to this Reply
Looks kind of good, it seems a little off center but as mentioned a weight would be most important
Valued Member
Canada
67 Posts
 Posted 03/25/2023  1:34 pm  Show Profile   Bookmark this reply Add mice45 to your friends list Get a Link to this Reply
It could be result of exposure to some chemicals.
Some years ago I did a study on how coin cleaning affects the surface and the color of copper coins.
The coin in the photo looks the same color as after being dipped into a common polisher named "Brasso" which is ammonia based
Short exposure to ammonia (no rubbing!) gives copper (bronze, to be accurate) cents the color of an old brass.
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Canada
712 Posts
 Posted 03/25/2023  2:19 pm  Show Profile   Bookmark this reply Add chadcoins to your friends list Get a Link to this Reply
Here it just took me minutes to do this, regular 1978 1 cent and one with a Brasso soaked / cleaned 1978 [ 2 minute soak]. Note the difference in colors.
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Canada
23 Posts
 Posted 03/25/2023  2:25 pm  Show Profile   Bookmark this reply Add thynium to your friends list Get a Link to this Reply
Ok thx alll , ill go check the exact weight and brb with pictures.
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Canada
849 Posts
 Posted 03/27/2023  2:02 pm  Show Profile   Bookmark this reply Add robmck1967 to your friends list Get a Link to this Reply
We will need the weight and pictures out of the 2x2 flip so we can see better details on the coin. I think I see weak letters on both reverse and obverse which could point to an under sized planchet.

It could be on a dime planchet or a foreign planchet since RCM minted for many countries.
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Canada
712 Posts
 Posted 03/27/2023  3:56 pm  Show Profile   Bookmark this reply Add chadcoins to your friends list Get a Link to this Reply
If you check the French Site under the 1978 1 cents, they have one there that looks identical.
https://www.coinsandcanada.com/coin...989#erreur-4
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Canada
23 Posts
 Posted 03/28/2023  9:53 pm  Show Profile   Bookmark this reply Add thynium to your friends list Get a Link to this Reply
Hi all , the weight is 2.66gr now I'm†going check tuto how make picture side by side sry :(())

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Canada
1333 Posts
 Posted 03/28/2023  11:02 pm  Show Profile   Bookmark this reply Add johnnysprawl to your friends list Get a Link to this Reply
Could be struck on a Bangladesh 25 Poisha planchet, which weighs 2.7 g and has a 19 mm diameter.
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Canada
5107 Posts
 Posted 03/28/2023  11:18 pm  Show Profile   Bookmark this reply Add john100 to your friends list Get a Link to this Reply
Not on a dime, now you need an XRF
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Canada
712 Posts
 Posted 03/29/2023  11:40 am  Show Profile   Bookmark this reply Add chadcoins to your friends list Get a Link to this Reply
thynium - Here's one I just got back from getting certified and its in the same league as yours. Maybe give CCCS a call, hes the only one in Canada to Certify this for you. Note how we identified the planchet. Would be nice to zap that coin first before sending it in and identify the country of origan for that planchet. Do your CSI work to perfection [Coin Seen Investigation] It will be well spent time and money on your part. You got some thing special there!!
New Member
Canada
23 Posts
 Posted 04/26/2023  2:14 pm  Show Profile   Bookmark this reply Add thynium to your friends list Get a Link to this Reply
Hi , was a long time sry was busy big time . But when you says "nice to zap that coin first before sending it in and identify the country of origan for that planchet." What you do mean exactly ? I'm†from quebec and my english doesn't understand that lol
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