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1980 25 Cent Coin On A 10 Cent Planchette?

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oriole's Avatar
Canada
5255 Posts
 Posted Today  6H 33M ago Show Profile   Bookmark this topic Add oriole to your friends list Get a Link to this Message Number of Subscribers

1980-25-Cent-Coin-On-A-10-Cent-Planchette?
1980-25-Cent-Coin-On-A-10-Cent-Planchette?

My LCS initially thought that this was homemade, but I am not so sure.

It weighs 2.12 grams, has a diameter of 18.4-18.6 mm (not quite circular, and has a thickness of 0.9-1.0 mm. It is magnetic.

A 10 cent coin of that era should weigh 2.07 grams, have a diameter of 18.03 mm and a thickness of 1.16 mm.

A 25 cent coin should have a thickness of 1.6 mm.

There is no reeding; the edge is smooth and rounded but no obvious sanding marks.

What makes me wonder if this happened at the mint is that the shape of the beads is not the same everywhere.
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Spence's Avatar
United States
34440 Posts
 Posted Today  4H 29M ago  Show Profile   Bookmark this reply Add Spence to your friends list Get a Link to this Reply
I'm definitely not an expert on Canadian errors (and hardly one on US errors), but I'm interested to hear how the mint could have made a coin with a raised rim and no edge reeding.
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johnnysprawl's Avatar
Canada
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 Posted Today  2H 19M ago  Show Profile   Bookmark this reply Add johnnysprawl to your friends list Get a Link to this Reply
There wouldn't be any reeding, as the planchet wasnt big enough to fully butt up against the collar
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johnnysprawl's Avatar
Canada
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 Posted Today  2H 15M ago  Show Profile   Bookmark this reply Add johnnysprawl to your friends list Get a Link to this Reply
Looks legit to me.
I have a 1986 quarter struck on a dime planchet which only weighs 2.0 g.
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