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2017-D Penny Die Crazing-Terminal State Shattered Die

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 Posted Today  13H 52M ago Show Profile   Bookmark this topic Add Cucamonger to your friends list Get a Link to this Message Number of Subscribers
Can anyone help me to identify the interconnecting lines I see on this penny. It's only on the obverse. Many lines are intersecting creating a dot, followed by more of the same. This is covering the entire obverse except for some of the high points due to wear.
I would not have noticed these, but the light and angle of the loupe showed these raised geometric lines.
The first photo is from a 10x Apple phone camera. The second is a 100x close up using a hand held microscope and my Apple phones camera attached to the microscope. (I didn't know I was that patient)
I haven't been able to find anything like it on-line.
I would greatly appreciate any assistance on identifying what causes this odd condition. Is it true die crazing from an over used die?
Thank you for any help you can give me.
Cucamonger.
2017-D-Penny-Die-Crazing-Terminal-State-Shattered-Die
2017-D-Penny-Die-Crazing-Terminal-State-Shattered-Die
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Errers and Varietys's Avatar
United States
74146 Posts
 Posted Today  13H 33M ago  Show Profile   Bookmark this reply Add Errers and Varietys to your friends list Get a Link to this Reply
To CCF! That's not a Shattered Die error. See the link here. https://www.error-ref.com/4880-2/ It's something that's on the coin. It's PMD of some sort.
Errers and Varietys.
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Petespockets55's Avatar
United States
5774 Posts
 Posted Today  9H 53M ago  Show Profile   Bookmark this reply Add Petespockets55 to your friends list Get a Link to this Reply
I have seen these before (and found a couple) but cannot remember if there was a consensus on what was the cause.
-Is this feature on both sides of the coin?
-What is the date?
I can't remember if there was some thought that it might be from exposure to an extreme heat/cold cycle (think liquid nitrogen or dry ice) which causes the surface plating to expand/contract differently than the underlying zinc core.

Like a lot of anomalies on coins, they are a head scratcher when you see them in person, partially because, in this case, the interconnecting lines are so uniform.

Edit: Now I see you said it was only on the obverse.
I'm not sure if "Die Crazing" ever came into previous discussions, but I believe it came up on the Lincoln Cent Forum (I hope mentioning them is ok.)
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Edited by Petespockets55
Today 9H 46M ago
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HondoB's Avatar
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25187 Posts
 Posted Today  5H 20M ago  Show Profile   Bookmark this reply Add HondoB to your friends list Get a Link to this Reply
to the CCF, Cucamonger.
I wonder if a soak in acetone would affect the appearance. Please give it a try and report back.
Inordinately fascinated by bits of metal with strange markings and figures
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