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Finally Found One! 1970-D Quarter Struck On Dime Stock

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 Posted 04/10/2022  8:02 pm Show Profile   Bookmark this topic Add mrwhatisit to your friends list Get a Link to this Message
Picked it up for just 1.50 ! I was looking for one for a while. It is definitely thin as a dime, and looks mid-AU to me .

Edited by mrwhatisit
04/10/2022 8:04 pm
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 Posted 04/10/2022  8:09 pm  Show Profile   Bookmark this reply Add levelsofmadnes to your friends list Get a Link to this Reply
what does it weigh? what does the edge look like

maybe nickel stock
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 Posted 04/10/2022  8:15 pm  Show Profile   Bookmark this reply Add mrwhatisit to your friends list Get a Link to this Reply
Weighs about 4.3 grams and I have not heard any 70-Ds on nickel stock. How I understand this is the mint workers picked up a dime stock 3,000 pound roll of metal instead of a quarter stock roll, then put it on the blanking machine and apparently 20,000 to 100,000 were struck before getting noticed.
Edited by mrwhatisit
04/10/2022 8:17 pm
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 Posted 04/10/2022  8:19 pm  Show Profile   Bookmark this reply Add nfine to your friends list Get a Link to this Reply
4.3g is well above the normal dime weight of 2.268 g.
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 Posted 04/10/2022  8:22 pm  Show Profile   Bookmark this reply Add Coinfrog to your friends list Get a Link to this Reply
Right, but OP is saying this is quarter-sized but substantially below a normal quarter weight.
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 Posted 04/10/2022  8:24 pm  Show Profile   Bookmark this reply Add -makecents- to your friends list Get a Link to this Reply
That would be cool but once again, waaaay above my pay grade. Could it be a thin planchet? What does the edge look like and why would it sell for a buck fifty?
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 Posted 04/10/2022  8:26 pm  Show Profile   Bookmark this reply Add mrwhatisit to your friends list Get a Link to this Reply
Right, I agree about the weight issue, coop will have to chime in perhaps, but it is indeed a legit mint error here.
Also a side picture here...



Oh yeah, a few number have been certified by PCGS, NGC, and other TPG's.
Edited by mrwhatisit
04/10/2022 8:27 pm
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 Posted 04/10/2022  8:38 pm  Show Profile   Bookmark this reply Add -makecents- to your friends list Get a Link to this Reply
Thanks for the pics. That's cool! Excited to hear the outcome and hope it's good!
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 Posted 04/10/2022  8:46 pm  Show Profile   Bookmark this reply Add Coinfrog to your friends list Get a Link to this Reply
Hope Dr. coop sees this and comments.
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 Posted 04/10/2022  9:03 pm  Show Profile   Bookmark this reply Add halfamind to your friends list Get a Link to this Reply
Looks promising. Might you try to slab it?
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 Posted 04/10/2022  9:13 pm  Show Profile   Bookmark this reply Add ijn1944 to your friends list Get a Link to this Reply
Might be fun to see a few photos of the coin alongside a 'regular' quarter of the same year.
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 Posted 04/10/2022  9:26 pm  Show Profile   Bookmark this reply Add silviosi to your friends list Get a Link to this Reply
If was struck on Dime roll, the weight must be somewhere around 3.05 gr. If it is 4.3 gr. approx. then we have a tinny planchet, from the begin or the end of the roll. An roll for planchets are not by weight, they are by length 1100 ft. long and the different denominations has different meddle diameter to can be accommodate to the waste roll machine. Somebody here put a weight for the roll. This is correct only in the cases of precious metal like Silver, Gold and Platinum.
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 Posted 04/10/2022  9:33 pm  Show Profile   Bookmark this reply Add Earle42 to your friends list Get a Link to this Reply
Nice find!

I like these b/c they bring back childhood memories.

When a kid my grandfather had a business which brought in a lot of change per week. We would go through the cons by denomination looking for silver. He had a sheet of plate glass he put on top of an old ironing board and we would pour the coins out, a bunch at a time, onto the glass listening for silver.

One time we heard silver in the quarters but could not see it. My grandfather finally found a thin quarter was the culprit. After finding a few more over a period of time, we then learned of the error the mint had made this year.
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 Posted 04/10/2022  9:41 pm  Show Profile   Bookmark this reply Add mrwhatisit to your friends list Get a Link to this Reply
Well, here is an image next to a quarter from 1973.
One can very much see the thickness difference.



Silviosi, I see what you are saying, but this was all from online research from reputable sites. The planchets were not yet struck out yet, the roll of metal was already a predetermined thickness and weight; it just so happened the mint personnel grabbed the wrong stock that was intended to become dimes but instead put it in the quarter blanking machine instead, hence this wrong stock error. At least that it is how I understand it .
Oh yeah, this I am gonna want slabbed...
Edited by mrwhatisit
04/10/2022 9:44 pm
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 Posted 04/10/2022  9:53 pm  Show Profile   Bookmark this reply Add Spence to your friends list Get a Link to this Reply
This one is above my pay grade but I'm interested to see where we land on this one.
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 Posted 04/10/2022  10:31 pm  Show Profile   Bookmark this reply Add hokiefan_82 to your friends list Get a Link to this Reply
Very interesting, I learned something new again this week!

FYI, the weight of a quarter struck on dime stock can be calculated by multiplying the weight of a dime by the ratio of the surface areas of a quarter to a dime, as the thickness of the dime and a quarter struck on dime stock would be the same.

The ratio of the areas simplifies to just the square of the ratio of the quarter and dime diameters, so (24.3/17.9)^2 = 1.843

A clad dime is about 2.27g, so multiplying by 1.843 we get about 4.18g for a quarter on dime stock, which is in the ballpark of the weight provided by mrwhatisit.

By the way, congrats on the acquisition! I have no clue what something like this would typically sell for, but $1.50 has to be quite a bargain...
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Edited by hokiefan_82
04/10/2022 11:09 pm
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