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1997 No Mint Mark Double Die

 
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Author Previous TopicReplies: 6 / Views: 248Next Topic  
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 Posted 11/21/2022  10:33 pm Show Profile   Bookmark this topic Add BSbythe way to your friends list Get a Link to this Message
This seems to be unusual.


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 Posted 11/21/2022  11:02 pm  Show Profile   Bookmark this reply Add silviosi to your friends list Get a Link to this Reply
1997 Philadelphia mint strike coins Cent do not has mint mark on. Except the anniversary of the modern cent, no Phil Mint has MM.
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 Posted 11/22/2022  04:51 am  Show Profile   Bookmark this reply Add John1 to your friends list Get a Link to this Reply

I agree with DDD,not a doubled die.
John1
( I'm no pro, it's just my humble opinion )
Searched 6.5 +/- Million Cents Since 1971
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 Posted 11/22/2022  09:07 am  Show Profile   Bookmark this reply Add Coinfrog to your friends list Get a Link to this Reply
I lean toward DDD.



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 Posted 11/22/2022  4:16 pm  Show Profile   Bookmark this reply Add BSbythe way to your friends list Get a Link to this Reply
Thank you. It seems to be all the way around and on both sides. It also seems to be off center slightly. Still trying to figure out how to post decent pics.
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 Posted 11/22/2022  4:27 pm  Show Profile   Bookmark this reply Add coop to your friends list Get a Link to this Reply
But note, this always shows on the direction towards the closest rim.

That is how you can tell it is die wear. The planchets are smaller than the normal cent. During the strike it get shaped in a collar that allows the outside edge to be determined. This movement of the metal, hundreds of thousands of times, creates wear on the dies. That is what you are seeing. The single squeeze dies wear in the same direction, but the fields are what is affected first on the Zincolns.


Note the ridge ring is appearing on the reverse also.
On the older style dies the devices were affected, not the fields.

Note the devices move on the older style dies. But it gets even worse:

Possibly if you looked on the reverse, you will see the same thing on the tops/bottoms of the devices closest to the rims. Just normal die wear.

Why does it happen this way?
My guess would be the difference in height of the designs. The single squeeze dies have a lower profile. On the only dies, they are higher profile devices. So that is why I feel it changes with die wear because of the difference of the profiles of the devices.

CoopHome: Why do dies show die wear? because of the higher numbers of struck coins, that go through the same repeated procedure over and over.
Richard S. Cooper
Some have asked about my images I use and I'm glad to say, you can now you can see the DVD in sections on youtube:
1. Intro, older coins, toned coins 2. Doubled dies 3. Die events, One of a kind errors 4. So called errors, Coin information 5. Coin information Types and Varieties, Overlays
Jefferson nickel doubled dies Wexler/Rebar complete listings

trail dies:http://www.traildies.com/
Edited by coop
11/22/2022 4:43 pm
  Previous TopicReplies: 6 / Views: 248Next Topic  
 
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