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Couple of mysteries (to me, at least). Weird PMD?

 
 
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 Posted 11/09/2018  12:08 am Show Profile   Bookmark this topic Add wesley1969 to your friends list Get a Link to this Message
Howdy to all. Two stumpers for me. First, a 1990
with a strange crack in the planchet (?). Faulty zinc sheet? Second, a 2011 shield cent that looks pretty shriveled/banged up. Devices fat/flat. Cautiously leaning toward PMD on this one due to the apparent extreme wear, but those folded over rims are throwing me. Been practicing with the new commie "coin microscope", hopefully the pics are sufficiently clear. Thanks in advance for any assistance on these.








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 Posted 11/09/2018  01:25 am  Show Profile   Check spruett001's eBay Listings Bookmark this reply Add spruett001 to your friends list Get a Link to this Reply
Hmmm...great questions. The 1990 is most likely a plating issue, whether it be the copper plating itself or effects of trapped debris between it and the zinc core. It almost looks like a die crack in the third pic, but it's in an odd place for that and the next pic shows there is more to it.

The 2011 appears to be a dryer coin to me. That's the only reasonable explanation I can come up with.

Sorry, I can't provide any more definitive answers.

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 Posted 11/09/2018  02:19 am  Show Profile   Bookmark this reply Add wesley1969 to your friends list Get a Link to this Reply
Spruett001 I think you may be spot on with coin 2. Was leaning in the direction of a rock tumbler filled with beach sand myself....tamayta/tamahta, I reckon. Earle's treatise on dryer coins was more empirically sound than most of what comes out of my VA shrink's mouth (and he is, IMHO, quite unstupid himself). Thanks, that one's going into my PMD stock book as a reference specimen...
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 Posted 11/09/2018  03:17 am  Show Profile   Check spruett001's eBay Listings Bookmark this reply Add spruett001 to your friends list Get a Link to this Reply
Unstupid is a good way to live. I have known of them, but have not found a dryer coin myself. I suppose I could plant a coin or two in our dryer...
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Edited by spruett001
11/09/2018 03:19 am
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 Posted 11/09/2018  04:07 am  Show Profile   Check JDRMCB's eBay Listings Bookmark this reply Add JDRMCB to your friends list Get a Link to this Reply
It's amazing what a little centrifugal force can do to a coin!
It's time to take that "leap of faith" with your portfolio and move into "Tangible Assets"!
Take physical possession of your hard earned life savings before the inevitable and undoubtedly the largest market correction in history happens and you find yourself waking up broke one morning in the very near future!
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 Posted 11/09/2018  12:23 pm  Show Profile   Check Errers and Varietys's eBay Listings Bookmark this reply Add Errers and Varietys to your friends list Get a Link to this Reply
The first coin has a cracked Copper plating issue, while the second coin was most likely a dryer coin. The second coin is Post Strike Damage ( PSD).
Errers and Varietys.
More information about Die Deterioration? http://goccf.com/t/317950
Retired U.S. Mint Coin Die Set information. http://goccf.com/t/302961
1988 P LMC RDV-006, 1998 P LMC Wide AM, and 2000 P LMC Wide AM. http://goccf.com/t/327834 http://goccf.com/t/294303 http://goccf.com/t/312900
1973 D Lincoln Memorial cent With Recurring Die Subsidence Error Information. http://goccf.com/t/304624
Machine Doubling tutorial. http://goccf.com/t/332421
Die states progression on coins. Scroll down, so you can see the different die state progressions. http://goccf.com/t/325638
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