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1976-S US Bicentennial Quarter Dollar Weight?

 
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Author Previous TopicReplies: 6 / Views: 349Next Topic  
Valued Member

Australia
94 Posts
 Posted 07/02/2020  12:27 pm Show Profile   Bookmark this topic Add Habib Alimohamma to your friends list Get a Link to this Message
Hi,
Today I was checking my quarters coins and I found 1976-S proof bicentennial quarter dollar coin that has 6.02g!
I know that proof 1976-S bicentennial quarter coin should be 5.75g(%40 silver) and %90 silver coins should be 6.25g, the weight of my coin is in between. How it possible to get such a coin? Is it rare and error coin?
I will be happy to receive your suggestions.
With regards,
Habib.
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United States
45600 Posts
 Posted 07/02/2020  1:52 pm  Show Profile   Bookmark this reply Add coop to your friends list Get a Link to this Reply
Weights can vary. But images might help us more. It the edge is showing copper, then it is a clad coin. If it is full silver than it is a silver coin.
Richard S. Cooper
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Valued Member
Australia
94 Posts
 Posted 07/04/2020  12:01 pm  Show Profile   Bookmark this reply Add Habib Alimohamma to your friends list Get a Link to this Reply
Hi,
Thank you for your kind reply and image.
As I mentioned it is proof bicentennial coin minted in San Francisco which is %40 silver, so its weight should be 5.75g.
Again many thanks. I will try to ask from PCGS people too.
With best regards,
Habib.
Valued Member
United States
482 Posts
 Posted 07/04/2020  5:08 pm  Show Profile   Bookmark this reply Add lcutler to your friends list Get a Link to this Reply
Assuming your scales are correct it is a little bit heavy, I don't think it is enough to really matter though.
Valued Member
Australia
94 Posts
 Posted 07/05/2020  1:02 pm  Show Profile   Bookmark this reply Add Habib Alimohamma to your friends list Get a Link to this Reply
Hi,
Thank you for your kind reply, but as you know much better than me, there is only 0.08g difference between copper-nickle Quarter coin and %40 silver Quarter coin. Here we have 0.27g difference with %40 silver Quarter coin which is almost 2.5 times more than difference between copper-nickle coin and %40 silver Quarter coin and it is only 0.23g less than %90 silver Quarter coin, so I have to think about it and find the answer.
With best regards,
Habib.
Bedrock of the Community
United States
16769 Posts
 Posted 07/06/2020  11:38 pm  Show Profile   Bookmark this reply Add Conder101 to your friends list Get a Link to this Reply
Toleranc for the 40% silver quarters was slightly stricter than for the clad coins (=/- .2 grams instead of .227) That would give a maximum in tolerance weight of 5.95 grams. So your coin is .07 grams out of tolerance. So TECHNICALLY an error, but not significant. If it had been 6.2 grams then I would say you had something good. Even 6.1 grams might have raised some interest, but .07 grams heavy isn't going to attract the attention of an error collector.
Gary Schmidt
Valued Member
Australia
94 Posts
 Posted 07/07/2020  11:34 am  Show Profile   Bookmark this reply Add Habib Alimohamma to your friends list Get a Link to this Reply
Hi,
Thank you so much for your kind information. I think it is better to keep this coin aside, till I get enough time to work on it.
With best regards,
Habib.
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